84638901 has 16 divisors (see below), whose sum is σ = 120424640. Its totient is φ = 52721280.

The previous prime is 84638893. The next prime is 84639013. The reversal of 84638901 is 10983648.

It is not a de Polignac number, because 84638901 - 2³ = 84638893 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84638901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84638201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6010 + ... + 14331.

It is an arithmetic number, because the mean of its divisors is an integer number (7526540).

Almost surely, 2^84638901 is an apocalyptic number.

It is an amenable number.

84638901 is a deficient number, since it is larger than the sum of its proper divisors (35785739).

84638901 is a wasteful number, since it uses less digits than its factorization.

84638901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20436.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 84638901 is about 9199.9402715452. The cubic root of 84638901 is about 439.0594596050.

The spelling of 84638901 in words is "eighty-four million, six hundred thirty-eight thousand, nine hundred one".