451900440 has 48 divisors (see below), whose sum is σ = 1468677600. Its totient is φ = 120506688.

The previous prime is 451900439. The next prime is 451900453. The reversal of 451900440 is 44009154.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 627280 + ... + 627999.

It is an arithmetic number, because the mean of its divisors is an integer number (30597450).

Almost surely, 2^451900440 is an apocalyptic number.

451900440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

451900440 is an abundant number, since it is smaller than the sum of its proper divisors (1016777160).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451900440 is a wasteful number, since it uses less digits than its factorization.

451900440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1255296 (or 1255289 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 451900440 is about 21257.9500422783. The cubic root of 451900440 is about 767.3866766727.

Adding to 451900440 its reverse (44009154), we get a palindrome (495909594).

The spelling of 451900440 in words is "four hundred fifty-one million, nine hundred thousand, four hundred forty".