139515983390 has 16 divisors (see below), whose sum is σ = 287004308832. Its totient is φ = 47834051424.

The previous prime is 139515983389. The next prime is 139515983393. The reversal of 139515983390 is 93389515931.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139515983393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 996542669 + ... + 996542808.

It is an arithmetic number, because the mean of its divisors is an integer number (17937769302).

Almost surely, 2^139515983390 is an apocalyptic number.

139515983390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139515983390 is an abundant number, since it is smaller than the sum of its proper divisors (147488325442).

139515983390 is a wasteful number, since it uses less digits than its factorization.

139515983390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993085491.

The product of its (nonzero) digits is 3936600, while the sum is 56.

The spelling of 139515983390 in words is "one hundred thirty-nine billion, five hundred fifteen million, nine hundred eighty-three thousand, three hundred ninety".