83870790 has 16 divisors (see below), whose sum is σ = 201289968. Its totient is φ = 22365536.

The previous prime is 83870783. The next prime is 83870821. The reversal of 83870790 is 9707838.

It is a congruent number.

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, 1397817 + ... + 1397876.

It is an arithmetic number, because the mean of its divisors is an integer number (12580623).

Almost surely, 2^83870790 is an apocalyptic number.

83870790 is an abundant number, since it is smaller than the sum of its proper divisors (117419178).

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

83870790 is a wasteful number, since it uses less digits than its factorization.

83870790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795703.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 83870790 is about 9158.0996937138. The cubic root of 83870790 is about 437.7272441224.

The spelling of 83870790 in words is "eighty-three million, eight hundred seventy thousand, seven hundred ninety".