855231290 has 32 divisors (see below), whose sum is σ = 1550900736. Its totient is φ = 339552000.

The previous prime is 855231271. The next prime is 855231323. The reversal of 855231290 is 92132558.

It is a self number, because there is not a number n which added to its sum of digits gives 855231290.

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, 1138415 + ... + 1139165.

It is an arithmetic number, because the mean of its divisors is an integer number (48465648).

Almost surely, 2^855231290 is an apocalyptic number.

855231290 is a deficient number, since it is larger than the sum of its proper divisors (695669446).

855231290 is a wasteful number, since it uses less digits than its factorization.

855231290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1454.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 855231290 is about 29244.3377425443. The cubic root of 855231290 is about 949.2075718788.

The spelling of 855231290 in words is "eight hundred fifty-five million, two hundred thirty-one thousand, two hundred ninety".