84622913 has 4 divisors (see below), whose sum is σ = 85399380. Its totient is φ = 83846448.

The previous prime is 84622877. The next prime is 84622919. The reversal of 84622913 is 31922648.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 76877824 + 7745089 = 8768^2 + 2783^2 .

It is a cyclic number.

It is not a de Polignac number, because 84622913 - 2¹⁶ = 84557377 is a prime.

It is a super-2 number, since 2×84622913² = 14322074809211138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84622919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388070 + ... + 388287.

It is an arithmetic number, because the mean of its divisors is an integer number (21349845).

Almost surely, 2^84622913 is an apocalyptic number.

It is an amenable number.

84622913 is a deficient number, since it is larger than the sum of its proper divisors (776467).

84622913 is a wasteful number, since it uses less digits than its factorization.

84622913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776466.

The product of its digits is 20736, while the sum is 35.

The square root of 84622913 is about 9199.0713118227. The cubic root of 84622913 is about 439.0318122521.

The spelling of 84622913 in words is "eighty-four million, six hundred twenty-two thousand, nine hundred thirteen".