264139222 has 12 divisors (see below), whose sum is σ = 414185940. Its totient is φ = 126326948.

The previous prime is 264139181. The next prime is 264139229. The reversal of 264139222 is 222931462.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (264139229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 123772 + ... + 125887.

It is an arithmetic number, because the mean of its divisors is an integer number (34515495).

Almost surely, 2^264139222 is an apocalyptic number.

264139222 is a deficient number, since it is larger than the sum of its proper divisors (150046718).

264139222 is a wasteful number, since it uses less digits than its factorization.

264139222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249707 (or 249684 counting only the distinct ones).

The product of its digits is 10368, while the sum is 31.

The square root of 264139222 is about 16252.3605054774. The cubic root of 264139222 is about 641.6196136933.

The spelling of 264139222 in words is "two hundred sixty-four million, one hundred thirty-nine thousand, two hundred twenty-two".