139133397 has 32 divisors (see below), whose sum is σ = 203930496. Its totient is φ = 83865600.

The previous prime is 139133383. The next prime is 139133399. The reversal of 139133397 is 793331931.

It is not a de Polignac number, because 139133397 - 2⁴ = 139133381 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139133399) 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 31 ways as a sum of consecutive naturals, for example, 577197 + ... + 577437.

It is an arithmetic number, because the mean of its divisors is an integer number (6372828).

Almost surely, 2^139133397 is an apocalyptic number.

It is an amenable number.

139133397 is a deficient number, since it is larger than the sum of its proper divisors (64797099).

139133397 is a wasteful number, since it uses less digits than its factorization.

139133397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 501.

The product of its digits is 45927, while the sum is 39.

The square root of 139133397 is about 11795.4820588224. The cubic root of 139133397 is about 518.1758035873.

The spelling of 139133397 in words is "one hundred thirty-nine million, one hundred thirty-three thousand, three hundred ninety-seven".