84387790 has 8 divisors (see below), whose sum is σ = 151898040. Its totient is φ = 33755112.

The previous prime is 84387763. The next prime is 84387841. The reversal of 84387790 is 9778348.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 84387790.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4219380 + ... + 4219399.

It is an arithmetic number, because the mean of its divisors is an integer number (18987255).

Almost surely, 2^84387790 is an apocalyptic number.

84387790 is a deficient number, since it is larger than the sum of its proper divisors (67510250).

84387790 is a wasteful number, since it uses less digits than its factorization.

84387790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8438786.

The product of its (nonzero) digits is 338688, while the sum is 46.

The square root of 84387790 is about 9186.2827084735. The cubic root of 84387790 is about 438.6248215007.

The spelling of 84387790 in words is "eighty-four million, three hundred eighty-seven thousand, seven hundred ninety".