621404094 has 32 divisors (see below), whose sum is σ = 1346526720. Its totient is φ = 190415232.

The previous prime is 621404089. The next prime is 621404099. The reversal of 621404094 is 490404126.

It is an interprime number because it is at equal distance from previous prime (621404089) and next prime (621404099).

It is a super-2 number, since 2×621404094² = 772286096079921672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (621404099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66454 + ... + 75225.

It is an arithmetic number, because the mean of its divisors is an integer number (42078960).

Almost surely, 2^621404094 is an apocalyptic number.

621404094 is an abundant number, since it is smaller than the sum of its proper divisors (725122626).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

621404094 is a wasteful number, since it uses less digits than its factorization.

621404094 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141744.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 621404094 is about 24927.9781370251. The cubic root of 621404094 is about 853.3451085140.

The spelling of 621404094 in words is "six hundred twenty-one million, four hundred four thousand, ninety-four".