451751989 has 16 divisors (see below), whose sum is σ = 498947008. Its totient is φ = 406467072.

The previous prime is 451751987. The next prime is 451752001. The reversal of 451751989 is 989157154.

It is a cyclic number.

It is not a de Polignac number, because 451751989 - 2¹ = 451751987 is a prime.

It is a super-2 number, since 2×451751989² = 408159719130912242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451751987) 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, 81814 + ... + 87160.

It is an arithmetic number, because the mean of its divisors is an integer number (31184188).

Almost surely, 2^451751989 is an apocalyptic number.

It is an amenable number.

451751989 is a deficient number, since it is larger than the sum of its proper divisors (47195019).

451751989 is a wasteful number, since it uses less digits than its factorization.

451751989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5524.

The product of its digits is 453600, while the sum is 49.

The square root of 451751989 is about 21254.4580970675. The cubic root of 451751989 is about 767.3026376632.

The spelling of 451751989 in words is "four hundred fifty-one million, seven hundred fifty-one thousand, nine hundred eighty-nine".