139494707 has 16 divisors (see below), whose sum is σ = 161769312. Its totient is φ = 118878720.

The previous prime is 139494689. The next prime is 139494721. The reversal of 139494707 is 707494931.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 139494707 - 2²⁶ = 72385843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139494307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 50453 + ... + 53145.

It is an arithmetic number, because the mean of its divisors is an integer number (10110582).

Almost surely, 2^139494707 is an apocalyptic number.

139494707 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

139494707 is a deficient number, since it is larger than the sum of its proper divisors (22274605).

139494707 is a wasteful number, since it uses less digits than its factorization.

139494707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2998.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 139494707 is about 11810.7877383348. The cubic root of 139494707 is about 518.6239592753.

The spelling of 139494707 in words is "one hundred thirty-nine million, four hundred ninety-four thousand, seven hundred seven".