2215139647 has 6 divisors (see below), whose sum is σ = 2531730488. Its totient is φ = 1898584392.

The previous prime is 2215139629. The next prime is 2215139651. The reversal of 2215139647 is 7469315122.

It is a happy number.

It is not a de Polignac number, because 2215139647 - 2¹⁵ = 2215106879 is a prime.

It is a super-2 number, since 2×2215139647² = 9813687311422569218, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2215139617) 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 5 ways as a sum of consecutive naturals, for example, 115629 + ... + 133417.

Almost surely, 2^2215139647 is an apocalyptic number.

2215139647 is a deficient number, since it is larger than the sum of its proper divisors (316590841).

2215139647 is an frugal number, since it uses more digits than its factorization.

2215139647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35585 (or 17796 counting only the distinct ones).

The product of its digits is 90720, while the sum is 40.

The square root of 2215139647 is about 47065.2700725280. The cubic root of 2215139647 is about 1303.5680376910.

The spelling of 2215139647 in words is "two billion, two hundred fifteen million, one hundred thirty-nine thousand, six hundred forty-seven".