139392394 has 16 divisors (see below), whose sum is σ = 215728128. Its totient is φ = 67500432.

The previous prime is 139392389. The next prime is 139392403. The reversal of 139392394 is 493293931.

It is a happy number.

139392394 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139392394.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12279 + ... + 20725.

It is an arithmetic number, because the mean of its divisors is an integer number (13483008).

Almost surely, 2^139392394 is an apocalyptic number.

139392394 is a deficient number, since it is larger than the sum of its proper divisors (76335734).

139392394 is a wasteful number, since it uses less digits than its factorization.

139392394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8709.

The product of its digits is 157464, while the sum is 43.

The square root of 139392394 is about 11806.4556069974. The cubic root of 139392394 is about 518.4971325963.

The spelling of 139392394 in words is "one hundred thirty-nine million, three hundred ninety-two thousand, three hundred ninety-four".