139976740 has 12 divisors (see below), whose sum is σ = 293951196. Its totient is φ = 55990688.

The previous prime is 139976737. The next prime is 139976783. The reversal of 139976740 is 47679931.

It can be written as a sum of positive squares in 2 ways, for example, as 88510464 + 51466276 = 9408^2 + 7174^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3499399 + ... + 3499438.

It is an arithmetic number, because the mean of its divisors is an integer number (24495933).

Almost surely, 2^139976740 is an apocalyptic number.

139976740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

139976740 is an abundant number, since it is smaller than the sum of its proper divisors (153974456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139976740 is a wasteful number, since it uses less digits than its factorization.

139976740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6998846 (or 6998844 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 46.

The square root of 139976740 is about 11831.1766109715. The cubic root of 139976740 is about 519.2206520655.

The spelling of 139976740 in words is "one hundred thirty-nine million, nine hundred seventy-six thousand, seven hundred forty".