402625849 has 4 divisors (see below), whose sum is σ = 402858064. Its totient is φ = 402393636.

The previous prime is 402625843. The next prime is 402625859. The reversal of 402625849 is 948526204.

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 402625849 - 2⁷ = 402625721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (402625843) 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, 113487 + ... + 116980.

It is an arithmetic number, because the mean of its divisors is an integer number (100714516).

Almost surely, 2^402625849 is an apocalyptic number.

It is an amenable number.

402625849 is a deficient number, since it is larger than the sum of its proper divisors (232215).

402625849 is a wasteful number, since it uses less digits than its factorization.

402625849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 232214.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 402625849 is about 20065.5388415064. The cubic root of 402625849 is about 738.4150695956.

The spelling of 402625849 in words is "four hundred two million, six hundred twenty-five thousand, eight hundred forty-nine".