434631621 has 16 divisors (see below), whose sum is σ = 606222720. Its totient is φ = 276460800.

The previous prime is 434631601. The next prime is 434631623. The reversal of 434631621 is 126136434.

It is not a de Polignac number, because 434631621 - 2⁷ = 434631493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434631623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20521 + ... + 35921.

It is an arithmetic number, because the mean of its divisors is an integer number (37888920).

Almost surely, 2^434631621 is an apocalyptic number.

It is an amenable number.

434631621 is a deficient number, since it is larger than the sum of its proper divisors (171591099).

434631621 is a wasteful number, since it uses less digits than its factorization.

434631621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15836.

The product of its digits is 10368, while the sum is 30.

The square root of 434631621 is about 20847.8205335714. The cubic root of 434631621 is about 757.4845395444.

The spelling of 434631621 in words is "four hundred thirty-four million, six hundred thirty-one thousand, six hundred twenty-one".