84622990 has 16 divisors (see below), whose sum is σ = 152443152. Its totient is φ = 33822144.

The previous prime is 84622961. The next prime is 84622997. The reversal of 84622990 is 9922648.

It is a super-2 number, since 2×84622990² = 14322100873080200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84622997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14017 + ... + 19123.

It is an arithmetic number, because the mean of its divisors is an integer number (9527697).

Almost surely, 2^84622990 is an apocalyptic number.

84622990 is a deficient number, since it is larger than the sum of its proper divisors (67820162).

84622990 is a wasteful number, since it uses less digits than its factorization.

84622990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6771.

The product of its (nonzero) digits is 62208, while the sum is 40.

The square root of 84622990 is about 9199.0754970269. The cubic root of 84622990 is about 439.0319454132.

The spelling of 84622990 in words is "eighty-four million, six hundred twenty-two thousand, nine hundred ninety".