3487987969 has 4 divisors (see below), whose sum is σ = 3488853040. Its totient is φ = 3487122900.

The previous prime is 3487987897. The next prime is 3487988003. The reversal of 3487987969 is 9697897843.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9697897843 = 17 ⋅570464579.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3487987969 is a prime.

It is a super-2 number, since 2×3487987969² = 24332120143777489922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3487987898 and 3487987907.

It is not an unprimeable number, because it can be changed into a prime (3487987369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426459 + ... + 434560.

It is an arithmetic number, because the mean of its divisors is an integer number (872213260).

Almost surely, 2^3487987969 is an apocalyptic number.

It is an amenable number.

3487987969 is a deficient number, since it is larger than the sum of its proper divisors (865071).

3487987969 is an equidigital number, since it uses as much as digits as its factorization.

3487987969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865070.

The product of its digits is 164602368, while the sum is 70.

The square root of 3487987969 is about 59059.1903855784. The cubic root of 3487987969 is about 1516.5555617091. Note that the first 4 decimals are identical.

The spelling of 3487987969 in words is "three billion, four hundred eighty-seven million, nine hundred eighty-seven thousand, nine hundred sixty-nine".