84807790 has 16 divisors (see below), whose sum is σ = 152891712. Its totient is φ = 33870304.

The previous prime is 84807763. The next prime is 84807797. The reversal of 84807790 is 9770848.

It is a super-2 number, since 2×84807790² = 14384722489368200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84807797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 507 + ... + 13033.

It is an arithmetic number, because the mean of its divisors is an integer number (9555732).

Almost surely, 2^84807790 is an apocalyptic number.

84807790 is a deficient number, since it is larger than the sum of its proper divisors (68083922).

84807790 is a wasteful number, since it uses less digits than its factorization.

84807790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13211.

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 84807790 is about 9209.1145068351. The cubic root of 84807790 is about 439.3512995882.

The spelling of 84807790 in words is "eighty-four million, eight hundred seven thousand, seven hundred ninety".