139330939 has 16 divisors (see below), whose sum is σ = 155151360. Its totient is φ = 124061760.

The previous prime is 139330909. The next prime is 139330949. The reversal of 139330939 is 939033931.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 139330939 - 2¹³ = 139322747 is a prime.

It is a super-2 number, since 2×139330939² = 38826221125243442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139330909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133582 + ... + 134620.

It is an arithmetic number, because the mean of its divisors is an integer number (9696960).

Almost surely, 2^139330939 is an apocalyptic number.

139330939 is a deficient number, since it is larger than the sum of its proper divisors (15820421).

139330939 is a wasteful number, since it uses less digits than its factorization.

139330939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290.

The product of its (nonzero) digits is 59049, while the sum is 40.

The square root of 139330939 is about 11803.8527184983. The cubic root of 139330939 is about 518.4209234521.

The spelling of 139330939 in words is "one hundred thirty-nine million, three hundred thirty thousand, nine hundred thirty-nine".