917902942 has 8 divisors (see below), whose sum is σ = 1502023032. Its totient is φ = 417228600.

The previous prime is 917902927. The next prime is 917902969. The reversal of 917902942 is 249209719.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20861409 + ... + 20861452.

It is an arithmetic number, because the mean of its divisors is an integer number (187752879).

Almost surely, 2^917902942 is an apocalyptic number.

917902942 is a deficient number, since it is larger than the sum of its proper divisors (584120090).

917902942 is a wasteful number, since it uses less digits than its factorization.

917902942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41722874.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 917902942 is about 30296.9130770777. The cubic root of 917902942 is about 971.8492875157.

The spelling of 917902942 in words is "nine hundred seventeen million, nine hundred two thousand, nine hundred forty-two".