4156987069 has 8 divisors (see below), whose sum is σ = 4242681080. Its totient is φ = 4071859200.

The previous prime is 4156987057. The next prime is 4156987091. The reversal of 4156987069 is 9607896514.

It can be written as a sum of positive squares in 4 ways, for example, as 486202500 + 3670784569 = 22050^2 + 60587^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4156987069 - 2⁷ = 4156986941 is a prime.

It is a super-2 number, since 2×4156987069² = 34561082983666421522, 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 (4156987039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126684 + ... + 156085.

It is an arithmetic number, because the mean of its divisors is an integer number (530335135).

Almost surely, 2^4156987069 is an apocalyptic number.

It is an amenable number.

4156987069 is a deficient number, since it is larger than the sum of its proper divisors (85694011).

4156987069 is a wasteful number, since it uses less digits than its factorization.

4156987069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283071.

The product of its (nonzero) digits is 3265920, while the sum is 55.

The square root of 4156987069 is about 64474.7009996944. The cubic root of 4156987069 is about 1607.9019350039.

The spelling of 4156987069 in words is "four billion, one hundred fifty-six million, nine hundred eighty-seven thousand, sixty-nine".