139223799 has 64 divisors (see below), whose sum is σ = 245306880. Its totient is φ = 76930560.

The previous prime is 139223771. The next prime is 139223803. The reversal of 139223799 is 997322931.

It is a happy number.

139223799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 139223799 - 2¹⁷ = 139092727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139223299) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 412959 + ... + 413295.

It is an arithmetic number, because the mean of its divisors is an integer number (3832920).

Almost surely, 2^139223799 is an apocalyptic number.

139223799 is a deficient number, since it is larger than the sum of its proper divisors (106083081).

139223799 is a wasteful number, since it uses less digits than its factorization.

139223799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477 (or 471 counting only the distinct ones).

The product of its digits is 183708, while the sum is 45.

The square root of 139223799 is about 11799.3134969794. The cubic root of 139223799 is about 518.2880076255.

The spelling of 139223799 in words is "one hundred thirty-nine million, two hundred twenty-three thousand, seven hundred ninety-nine".