451616939 has 2 divisors, whose sum is σ = 451616940. Its totient is φ = 451616938.

The previous prime is 451616863. The next prime is 451616987. The reversal of 451616939 is 939616154.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 451616939 - 2¹⁶ = 451551403 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 451616939.

It is not a weakly prime, because it can be changed into another prime (451616239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 225808469 + 225808470.

It is an arithmetic number, because the mean of its divisors is an integer number (225808470).

Almost surely, 2^451616939 is an apocalyptic number.

451616939 is a deficient number, since it is larger than the sum of its proper divisors (1).

451616939 is an equidigital number, since it uses as much as digits as its factorization.

451616939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 44.

The square root of 451616939 is about 21251.2808790435. The cubic root of 451616939 is about 767.2261690465.

The spelling of 451616939 in words is "four hundred fifty-one million, six hundred sixteen thousand, nine hundred thirty-nine".