84679790 has 64 divisors (see below), whose sum is σ = 173408256. Its totient is φ = 29538432.

The previous prime is 84679787. The next prime is 84679799. The reversal of 84679790 is 9797648.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84679799) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 379619 + ... + 379841.

It is an arithmetic number, because the mean of its divisors is an integer number (2709504).

Almost surely, 2^84679790 is an apocalyptic number.

84679790 is an abundant number, since it is smaller than the sum of its proper divisors (88728466).

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

84679790 is a wasteful number, since it uses less digits than its factorization.

84679790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393.

The product of its (nonzero) digits is 762048, while the sum is 50.

The square root of 84679790 is about 9202.1622459072. The cubic root of 84679790 is about 439.1301513391.

The spelling of 84679790 in words is "eighty-four million, six hundred seventy-nine thousand, seven hundred ninety".