454421623 has 4 divisors (see below), whose sum is σ = 459106480. Its totient is φ = 449736768.

The previous prime is 454421609. The next prime is 454421659. The reversal of 454421623 is 326124454.

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-454421623 is a prime.

It is a super-2 number, since 2×454421623² = 412998022899908258, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (454421663) 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, 2342283 + ... + 2342476.

It is an arithmetic number, because the mean of its divisors is an integer number (114776620).

Almost surely, 2^454421623 is an apocalyptic number.

454421623 is a deficient number, since it is larger than the sum of its proper divisors (4684857).

454421623 is an equidigital number, since it uses as much as digits as its factorization.

454421623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4684856.

The product of its digits is 23040, while the sum is 31.

The square root of 454421623 is about 21317.1673305812. The cubic root of 454421623 is about 768.8111315610.

The spelling of 454421623 in words is "four hundred fifty-four million, four hundred twenty-one thousand, six hundred twenty-three".