84464621 has 2 divisors, whose sum is σ = 84464622. Its totient is φ = 84464620.

The previous prime is 84464609. The next prime is 84464663. The reversal of 84464621 is 12646448.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63027721 + 21436900 = 7939^2 + 4630^2 .

It is a cyclic number.

It is not a de Polignac number, because 84464621 - 2²² = 80270317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84464021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42232310 + 42232311.

It is an arithmetic number, because the mean of its divisors is an integer number (42232311).

Almost surely, 2^84464621 is an apocalyptic number.

It is an amenable number.

84464621 is a deficient number, since it is larger than the sum of its proper divisors (1).

84464621 is an equidigital number, since it uses as much as digits as its factorization.

84464621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36864, while the sum is 35.

The square root of 84464621 is about 9190.4635900481. The cubic root of 84464621 is about 438.7578966823.

The spelling of 84464621 in words is "eighty-four million, four hundred sixty-four thousand, six hundred twenty-one".