422404451 has 6 divisors (see below), whose sum is σ = 491368500. Its totient is φ = 362060916.

The previous prime is 422404441. The next prime is 422404471. The reversal of 422404451 is 154404224.

It is not a de Polignac number, because 422404451 - 2⁶ = 422404387 is a prime.

It is a super-2 number, since 2×422404451² = 356851040449222802, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 422404451.

It is not an unprimeable number, because it can be changed into a prime (422404441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4310201 + ... + 4310298.

It is an arithmetic number, because the mean of its divisors is an integer number (81894750).

Almost surely, 2^422404451 is an apocalyptic number.

422404451 is a deficient number, since it is larger than the sum of its proper divisors (68964049).

422404451 is an equidigital number, since it uses as much as digits as its factorization.

422404451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620513 (or 8620506 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 26.

The square root of 422404451 is about 20552.4804099165. The cubic root of 422404451 is about 750.3136175811.

Adding to 422404451 its reverse (154404224), we get a palindrome (576808675).

The spelling of 422404451 in words is "four hundred twenty-two million, four hundred four thousand, four hundred fifty-one".