3442391857 has 4 divisors (see below), whose sum is σ = 3526352676. Its totient is φ = 3358431040.

The previous prime is 3442391803. The next prime is 3442391879. The reversal of 3442391857 is 7581932443.

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

It can be written as a sum of positive squares in 2 ways, for example, as 733813921 + 2708577936 = 27089^2 + 52044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3442391857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3442391357) 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, 41980348 + ... + 41980429.

It is an arithmetic number, because the mean of its divisors is an integer number (881588169).

Almost surely, 2^3442391857 is an apocalyptic number.

It is an amenable number.

3442391857 is a deficient number, since it is larger than the sum of its proper divisors (83960819).

3442391857 is an equidigital number, since it uses as much as digits as its factorization.

3442391857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83960818.

The product of its digits is 725760, while the sum is 46.

The square root of 3442391857 is about 58671.9000629773. The cubic root of 3442391857 is about 1509.9182531071.

The spelling of 3442391857 in words is "three billion, four hundred forty-two million, three hundred ninety-one thousand, eight hundred fifty-seven".