140032979 has 2 divisors, whose sum is σ = 140032980. Its totient is φ = 140032978.

The previous prime is 140032973. The next prime is 140033009. The reversal of 140032979 is 979230041.

It is a weak prime.

It is an emirp because it is prime and its reverse (979230041) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 140032979 - 2²⁰ = 138984403 is a prime.

It is a super-2 number, since 2×140032979² = 39218470415228882, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (140032973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70016489 + 70016490.

It is an arithmetic number, because the mean of its divisors is an integer number (70016490).

Almost surely, 2^140032979 is an apocalyptic number.

140032979 is a deficient number, since it is larger than the sum of its proper divisors (1).

140032979 is an equidigital number, since it uses as much as digits as its factorization.

140032979 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 140032979 is about 11833.5531012456. The cubic root of 140032979 is about 519.2901791895.

The spelling of 140032979 in words is "one hundred forty million, thirty-two thousand, nine hundred seventy-nine".