905139692 has 12 divisors (see below), whose sum is σ = 1599373776. Its totient is φ = 448175760.

The previous prime is 905139659. The next prime is 905139707. The reversal of 905139692 is 296931509.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1098059 + ... + 1098882.

It is an arithmetic number, because the mean of its divisors is an integer number (133281148).

Almost surely, 2^905139692 is an apocalyptic number.

It is an amenable number.

905139692 is a deficient number, since it is larger than the sum of its proper divisors (694234084).

905139692 is a wasteful number, since it uses less digits than its factorization.

905139692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197048 (or 2197046 counting only the distinct ones).

The product of its (nonzero) digits is 131220, while the sum is 44.

The square root of 905139692 is about 30085.5395829957. The cubic root of 905139692 is about 967.3237926445.

The spelling of 905139692 in words is "nine hundred five million, one hundred thirty-nine thousand, six hundred ninety-two".