451442039 has 4 divisors (see below), whose sum is σ = 454317624. Its totient is φ = 448566456.

The previous prime is 451442027. The next prime is 451442041. The reversal of 451442039 is 930244154.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-451442039 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 451441996 and 451442014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451442059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1437557 + ... + 1437870.

It is an arithmetic number, because the mean of its divisors is an integer number (113579406).

Almost surely, 2^451442039 is an apocalyptic number.

451442039 is a deficient number, since it is larger than the sum of its proper divisors (2875585).

451442039 is a wasteful number, since it uses less digits than its factorization.

451442039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2875584.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 451442039 is about 21247.1654344762. The cubic root of 451442039 is about 767.1271137251.

The spelling of 451442039 in words is "four hundred fifty-one million, four hundred forty-two thousand, thirty-nine".