961239804 has 48 divisors (see below), whose sum is σ = 2567244288. Its totient is φ = 274218048.

The previous prime is 961239791. The next prime is 961239863. The reversal of 961239804 is 408932169.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48417 + ... + 65319.

It is an arithmetic number, because the mean of its divisors is an integer number (53484256).

Almost surely, 2^961239804 is an apocalyptic number.

It is an amenable number.

961239804 is an abundant number, since it is smaller than the sum of its proper divisors (1606004484).

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

961239804 is a wasteful number, since it uses less digits than its factorization.

961239804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17594 (or 17592 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 961239804 is about 31003.8675651926. The cubic root of 961239804 is about 986.9093164365.

The spelling of 961239804 in words is "nine hundred sixty-one million, two hundred thirty-nine thousand, eight hundred four".