451440074 has 4 divisors (see below), whose sum is σ = 677160114. Its totient is φ = 225720036.

The previous prime is 451440007. The next prime is 451440079. The reversal of 451440074 is 470044154.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 297804049 + 153636025 = 17257^2 + 12395^2 .

It is not an unprimeable number, because it can be changed into a prime (451440079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112860017 + ... + 112860020.

Almost surely, 2^451440074 is an apocalyptic number.

451440074 is a deficient number, since it is larger than the sum of its proper divisors (225720040).

451440074 is a wasteful number, since it uses less digits than its factorization.

451440074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225720039.

The product of its (nonzero) digits is 8960, while the sum is 29.

The square root of 451440074 is about 21247.1191929635. The cubic root of 451440074 is about 767.1260006941.

The spelling of 451440074 in words is "four hundred fifty-one million, four hundred forty thousand, seventy-four".