139976 has 8 divisors (see below), whose sum is σ = 262470. Its totient is φ = 69984.

The previous prime is 139969. The next prime is 139981. The reversal of 139976 is 679931.

139976 = T₂₁₃ + T₂₁₄ + ... + T₂₁₈.

It can be written as a sum of positive squares in only one way, i.e., 139876 + 100 = 374^2 + 10^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 139976.

It is an unprimeable number.

139976 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8741 + ... + 8756.

2¹³⁹⁹⁷⁶ is an apocalyptic number.

It is an amenable number.

139976 is a deficient number, since it is larger than the sum of its proper divisors (122494).

139976 is a wasteful number, since it uses less digits than its factorization.

139976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17503 (or 17499 counting only the distinct ones).

The product of its digits is 10206, while the sum is 35.

The square root of 139976 is about 374.1336659538. The cubic root of 139976 is about 51.9219737095.

The spelling of 139976 in words is "one hundred thirty-nine thousand, nine hundred seventy-six".