3937621323 has 6 divisors (see below), whose sum is σ = 5250306684. Its totient is φ = 2625008424.

The previous prime is 3937621307. The next prime is 3937621339. The reversal of 3937621323 is 3231267393.

It is an interprime number because it is at equal distance from previous prime (3937621307) and next prime (3937621339).

It is not a de Polignac number, because 3937621323 - 2⁴ = 3937621307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3937622323) 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, 90573 + ... + 126801.

It is an arithmetic number, because the mean of its divisors is an integer number (875051114).

Almost surely, 2^3937621323 is an apocalyptic number.

3937621323 is a deficient number, since it is larger than the sum of its proper divisors (1312685361).

3937621323 is an frugal number, since it uses more digits than its factorization.

3937621323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72461 (or 36232 counting only the distinct ones).

The product of its digits is 122472, while the sum is 39.

The square root of 3937621323 is about 62750.4687074129. The cubic root of 3937621323 is about 1579.1061176538.

The spelling of 3937621323 in words is "three billion, nine hundred thirty-seven million, six hundred twenty-one thousand, three hundred twenty-three".