8214693939 has 6 divisors (see below), whose sum is σ = 11865669036. Its totient is φ = 5476462620.

The previous prime is 8214693923. The next prime is 8214693941. The reversal of 8214693939 is 9393964128.

It is not a de Polignac number, because 8214693939 - 2⁴ = 8214693923 is a prime.

It is a super-2 number, since 2×8214693939² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8214693919) 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, 456371877 + ... + 456371894.

It is an arithmetic number, because the mean of its divisors is an integer number (1977611506).

Almost surely, 2^8214693939 is an apocalyptic number.

8214693939 is a deficient number, since it is larger than the sum of its proper divisors (3650975097).

8214693939 is a wasteful number, since it uses less digits than its factorization.

8214693939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912743777 (or 912743774 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 8214693939 is about 90634.9487725348. The cubic root of 8214693939 is about 2017.7334590697.

The spelling of 8214693939 in words is "eight billion, two hundred fourteen million, six hundred ninety-three thousand, nine hundred thirty-nine".