451693972 has 12 divisors (see below), whose sum is σ = 791078400. Its totient is φ = 225671576.

The previous prime is 451693969. The next prime is 451694021. The reversal of 451693972 is 279396154.

It is a happy number.

It is a super-2 number, since 2×451693972² = 408054888682273568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37972 + ... + 48427.

It is an arithmetic number, because the mean of its divisors is an integer number (65923200).

Almost surely, 2^451693972 is an apocalyptic number.

It is an amenable number.

451693972 is a deficient number, since it is larger than the sum of its proper divisors (339384428).

451693972 is a wasteful number, since it uses less digits than its factorization.

451693972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87710 (or 87708 counting only the distinct ones).

The product of its digits is 408240, while the sum is 46.

The square root of 451693972 is about 21253.0932336919. The cubic root of 451693972 is about 767.2697888848.

It can be divided in two parts, 45169 and 3972, that added together give a triangular number (49141 = T₃₁₃).

The spelling of 451693972 in words is "four hundred fifty-one million, six hundred ninety-three thousand, nine hundred seventy-two".