3855492979 has 4 divisors (see below), whose sum is σ = 4152069376. Its totient is φ = 3558916584.

The previous prime is 3855492973. The next prime is 3855493027. The reversal of 3855492979 is 9792945583.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3855492979 - 2¹⁵ = 3855460211 is a prime.

It is a super-2 number, since 2×3855492979² = 29729652222236588882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3855492973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 148288179 + ... + 148288204.

It is an arithmetic number, because the mean of its divisors is an integer number (1038017344).

Almost surely, 2^3855492979 is an apocalyptic number.

3855492979 is a deficient number, since it is larger than the sum of its proper divisors (296576397).

3855492979 is a wasteful number, since it uses less digits than its factorization.

3855492979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296576396.

The product of its digits is 24494400, while the sum is 61.

The square root of 3855492979 is about 62092.6161391192. The cubic root of 3855492979 is about 1568.0502361115.

The spelling of 3855492979 in words is "three billion, eight hundred fifty-five million, four hundred ninety-two thousand, nine hundred seventy-nine".