3489000781 has 4 divisors (see below), whose sum is σ = 3987429472. Its totient is φ = 2990572092.

The previous prime is 3489000751. The next prime is 3489000787. The reversal of 3489000781 is 1870009843.

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.

It is a cyclic number.

It is not a de Polignac number, because 3489000781 - 2⁹ = 3489000269 is a prime.

It is a super-2 number, since 2×3489000781² = 24346252899637219922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3489000787) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 249214335 + ... + 249214348.

It is an arithmetic number, because the mean of its divisors is an integer number (996857368).

Almost surely, 2^3489000781 is an apocalyptic number.

It is an amenable number.

3489000781 is a deficient number, since it is larger than the sum of its proper divisors (498428691).

3489000781 is an equidigital number, since it uses as much as digits as its factorization.

3489000781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498428690.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 3489000781 is about 59067.7643135408. The cubic root of 3489000781 is about 1516.7023356315.

The spelling of 3489000781 in words is "three billion, four hundred eighty-nine million, seven hundred eighty-one", and thus it is an aban number.