442497453 has 8 divisors (see below), whose sum is σ = 591210048. Its totient is φ = 294391584.

The previous prime is 442497443. The next prime is 442497481. The reversal of 442497453 is 354794244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 442497453 - 2⁶ = 442497389 is a prime.

It is a super-2 number, since 2×442497453² = 391607991822974418, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442497443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149976 + ... + 152897.

It is an arithmetic number, because the mean of its divisors is an integer number (73901256).

Almost surely, 2^442497453 is an apocalyptic number.

It is an amenable number.

442497453 is a deficient number, since it is larger than the sum of its proper divisors (148712595).

442497453 is a wasteful number, since it uses less digits than its factorization.

442497453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303363.

The product of its digits is 483840, while the sum is 42.

The square root of 442497453 is about 21035.6234278901. The cubic root of 442497453 is about 762.0268227206.

The spelling of 442497453 in words is "four hundred forty-two million, four hundred ninety-seven thousand, four hundred fifty-three".