402117955 has 8 divisors (see below), whose sum is σ = 494311104. Its totient is φ = 313848000.

The previous prime is 402117929. The next prime is 402117959. The reversal of 402117955 is 559711204.

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

It is not a de Polignac number, because 402117955 - 2⁵ = 402117923 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 402117955.

It is not an unprimeable number, because it can be changed into a prime (402117959) 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 7 ways as a sum of consecutive naturals, for example, 980571 + ... + 980980.

It is an arithmetic number, because the mean of its divisors is an integer number (61788888).

Almost surely, 2^402117955 is an apocalyptic number.

402117955 is a deficient number, since it is larger than the sum of its proper divisors (92193149).

402117955 is a wasteful number, since it uses less digits than its factorization.

402117955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1961597.

The product of its (nonzero) digits is 12600, while the sum is 34.

The square root of 402117955 is about 20052.8789703623. The cubic root of 402117955 is about 738.1044467249.

The spelling of 402117955 in words is "four hundred two million, one hundred seventeen thousand, nine hundred fifty-five".