855709388 has 24 divisors (see below), whose sum is σ = 1577221632. Its totient is φ = 405422864.

The previous prime is 855709373. The next prime is 855709429. The reversal of 855709388 is 883907558.

It is a super-2 number, since 2×855709388² = 1464477113422669088, which contains 22 as substring.

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, 33620 + ... + 53307.

It is an arithmetic number, because the mean of its divisors is an integer number (65717568).

Almost surely, 2^855709388 is an apocalyptic number.

It is an amenable number.

855709388 is a deficient number, since it is larger than the sum of its proper divisors (721512244).

855709388 is a wasteful number, since it uses less digits than its factorization.

855709388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87061 (or 87059 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 53.

The square root of 855709388 is about 29252.5107982204. The cubic root of 855709388 is about 949.3844167115.

The spelling of 855709388 in words is "eight hundred fifty-five million, seven hundred nine thousand, three hundred eighty-eight".