84789690 has 16 divisors (see below), whose sum is σ = 203495328. Its totient is φ = 22610576.

The previous prime is 84789643. The next prime is 84789709. The reversal of 84789690 is 9698748.

It is a happy number.

It is a super-2 number, since 2×84789690² = 14378583060592200, which contains 22 as substring.

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, 1413132 + ... + 1413191.

It is an arithmetic number, because the mean of its divisors is an integer number (12718458).

Almost surely, 2^84789690 is an apocalyptic number.

84789690 is an abundant number, since it is smaller than the sum of its proper divisors (118705638).

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

84789690 is a wasteful number, since it uses less digits than its factorization.

84789690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2826333.

The product of its (nonzero) digits is 870912, while the sum is 51.

The square root of 84789690 is about 9208.1317323331. The cubic root of 84789690 is about 439.3200413578.

The spelling of 84789690 in words is "eighty-four million, seven hundred eighty-nine thousand, six hundred ninety".