908399442 has 16 divisors (see below), whose sum is σ = 1818010080. Its totient is φ = 302597952.

The previous prime is 908399441. The next prime is 908399447. The reversal of 908399442 is 244993809.

It is a super-2 number, since 2×908399442² = 1650379092451822728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 908399391 and 908399400.

It is not an unprimeable number, because it can be changed into a prime (908399441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40567 + ... + 58842.

It is an arithmetic number, because the mean of its divisors is an integer number (113625630).

Almost surely, 2^908399442 is an apocalyptic number.

908399442 is an abundant number, since it is smaller than the sum of its proper divisors (909610638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

908399442 is a wasteful number, since it uses less digits than its factorization.

908399442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100937.

The product of its (nonzero) digits is 559872, while the sum is 48.

The square root of 908399442 is about 30139.6655920400. The cubic root of 908399442 is about 968.4836342275.

The spelling of 908399442 in words is "nine hundred eight million, three hundred ninety-nine thousand, four hundred forty-two".