855539240 has 32 divisors (see below), whose sum is σ = 1987061760. Its totient is φ = 331176000.

The previous prime is 855539227. The next prime is 855539287. The reversal of 855539240 is 42935558.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343736 + ... + 346215.

It is an arithmetic number, because the mean of its divisors is an integer number (62095680).

Almost surely, 2^855539240 is an apocalyptic number.

It is an amenable number.

855539240 is an abundant number, since it is smaller than the sum of its proper divisors (1131522520).

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

855539240 is a wasteful number, since it uses less digits than its factorization.

855539240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689993 (or 689989 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 41.

The square root of 855539240 is about 29249.6023904599. The cubic root of 855539240 is about 949.3214878053.

The spelling of 855539240 in words is "eight hundred fifty-five million, five hundred thirty-nine thousand, two hundred forty".