451739894 has 4 divisors (see below), whose sum is σ = 677609844. Its totient is φ = 225869946.

The previous prime is 451739891. The next prime is 451739909. The reversal of 451739894 is 498937154.

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

It is a super-2 number, since 2×451739894² = 408137863662262472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451739891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112934972 + ... + 112934975.

It is an arithmetic number, because the mean of its divisors is an integer number (169402461).

Almost surely, 2^451739894 is an apocalyptic number.

451739894 is a deficient number, since it is larger than the sum of its proper divisors (225869950).

451739894 is a wasteful number, since it uses less digits than its factorization.

451739894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225869949.

The product of its digits is 1088640, while the sum is 50.

The square root of 451739894 is about 21254.1735666198. The cubic root of 451739894 is about 767.2957897994.

The spelling of 451739894 in words is "four hundred fifty-one million, seven hundred thirty-nine thousand, eight hundred ninety-four".