855597940 has 48 divisors (see below), whose sum is σ = 1847966400. Its totient is φ = 332617472.

The previous prime is 855597931. The next prime is 855597971. The reversal of 855597940 is 49795558.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 100947 + ... + 109093.

It is an arithmetic number, because the mean of its divisors is an integer number (38499300).

Almost surely, 2^855597940 is an apocalyptic number.

It is an amenable number.

855597940 is an abundant number, since it is smaller than the sum of its proper divisors (992368460).

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

855597940 is a wasteful number, since it uses less digits than its factorization.

855597940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8304 (or 8302 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 52.

The square root of 855597940 is about 29250.6058056923. The cubic root of 855597940 is about 949.3431988285.

The spelling of 855597940 in words is "eight hundred fifty-five million, five hundred ninety-seven thousand, nine hundred forty".