22139377 has 12 divisors (see below), whose sum is σ = 24223836. Its totient is φ = 20113920.

The previous prime is 22139371. The next prime is 22139407. The reversal of 22139377 is 77393122.

It can be written as a sum of positive squares in 6 ways, for example, as 6780816 + 15358561 = 2604^2 + 3919^2 .

It is not a de Polignac number, because 22139377 - 2¹⁹ = 21615089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22139371) 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 11 ways as a sum of consecutive naturals, for example, 122227 + ... + 122407.

It is an arithmetic number, because the mean of its divisors is an integer number (2018653).

Almost surely, 2^22139377 is an apocalyptic number.

22139377 is the 2353-rd decagonal number.

It is an amenable number.

22139377 is a deficient number, since it is larger than the sum of its proper divisors (2084459).

22139377 is an equidigital number, since it uses as much as digits as its factorization.

22139377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388 (or 291 counting only the distinct ones).

The product of its digits is 15876, while the sum is 34.

The square root of 22139377 is about 4705.2499402263. The cubic root of 22139377 is about 280.7944148761.

The spelling of 22139377 in words is "twenty-two million, one hundred thirty-nine thousand, three hundred seventy-seven".