15139396 has 6 divisors (see below), whose sum is σ = 26493950. Its totient is φ = 7569696.

The previous prime is 15139393. The next prime is 15139417. The reversal of 15139396 is 69393151.

It can be written as a sum of positive squares in only one way, i.e., 13793796 + 1345600 = 3714^2 + 1160^2 .

It is a super-2 number, since 2×15139396² = 458402622489632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15139391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1892421 + ... + 1892428.

Almost surely, 2^15139396 is an apocalyptic number.

It is an amenable number.

15139396 is a deficient number, since it is larger than the sum of its proper divisors (11354554).

15139396 is a wasteful number, since it uses less digits than its factorization.

15139396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3784853 (or 3784851 counting only the distinct ones).

The product of its digits is 21870, while the sum is 37.

The square root of 15139396 is about 3890.9376761907. The cubic root of 15139396 is about 247.3828088524.

The spelling of 15139396 in words is "fifteen million, one hundred thirty-nine thousand, three hundred ninety-six".