139740807 has 8 divisors (see below), whose sum is σ = 189836784. Its totient is φ = 91402688.

The previous prime is 139740793. The next prime is 139740817. The reversal of 139740807 is 708047931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139740807 - 2⁸ = 139740551 is a prime.

It is a super-2 number, since 2×139740807² = 39054986282022498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139740817) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 439278 + ... + 439595.

It is an arithmetic number, because the mean of its divisors is an integer number (23729598).

Almost surely, 2^139740807 is an apocalyptic number.

139740807 is a deficient number, since it is larger than the sum of its proper divisors (50095977).

139740807 is an equidigital number, since it uses as much as digits as its factorization.

139740807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878929.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 139740807 is about 11821.2015886711. The cubic root of 139740807 is about 518.9287698176.

The spelling of 139740807 in words is "one hundred thirty-nine million, seven hundred forty thousand, eight hundred seven".