84690993 has 8 divisors (see below), whose sum is σ = 113091808. Its totient is φ = 56375424.

The previous prime is 84690989. The next prime is 84691007. The reversal of 84690993 is 39909648.

It is a happy number.

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

It is not a de Polignac number, because 84690993 - 2² = 84690989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (84690913) 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, 18955 + ... + 22992.

It is an arithmetic number, because the mean of its divisors is an integer number (14136476).

Almost surely, 2^84690993 is an apocalyptic number.

It is an amenable number.

84690993 is a deficient number, since it is larger than the sum of its proper divisors (28400815).

84690993 is a wasteful number, since it uses less digits than its factorization.

84690993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42623.

The product of its (nonzero) digits is 419904, while the sum is 48.

The square root of 84690993 is about 9202.7709414067. The cubic root of 84690993 is about 439.1495158893.

The spelling of 84690993 in words is "eighty-four million, six hundred ninety thousand, nine hundred ninety-three".