621413339 has 4 divisors (see below), whose sum is σ = 635864856. Its totient is φ = 606961824.

The previous prime is 621413323. The next prime is 621413347. The reversal of 621413339 is 933314126.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 933314126 = 2 ⋅466657063.

It is a cyclic number.

It is not a de Polignac number, because 621413339 - 2⁴ = 621413323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (621413239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7225694 + ... + 7225779.

It is an arithmetic number, because the mean of its divisors is an integer number (158966214).

Almost surely, 2^621413339 is an apocalyptic number.

621413339 is a deficient number, since it is larger than the sum of its proper divisors (14451517).

621413339 is a wasteful number, since it uses less digits than its factorization.

621413339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14451516.

The product of its digits is 11664, while the sum is 32.

The square root of 621413339 is about 24928.1635705481. The cubic root of 621413339 is about 853.3493404014.

The spelling of 621413339 in words is "six hundred twenty-one million, four hundred thirteen thousand, three hundred thirty-nine".