139921359 has 8 divisors (see below), whose sum is σ = 186659712. Its totient is φ = 93231960.

The previous prime is 139921357. The next prime is 139921367. The reversal of 139921359 is 953129931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139921359 - 2¹ = 139921357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139921359.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139921357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4947 + ... + 17444.

It is an arithmetic number, because the mean of its divisors is an integer number (23332464).

Almost surely, 2^139921359 is an apocalyptic number.

139921359 is a deficient number, since it is larger than the sum of its proper divisors (46738353).

139921359 is a wasteful number, since it uses less digits than its factorization.

139921359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24477.

The product of its digits is 65610, while the sum is 42.

The square root of 139921359 is about 11828.8359106042. The cubic root of 139921359 is about 519.1521674682.

It can be divided in two parts, 13992 and 1359, that added together give a palindrome (15351).

The spelling of 139921359 in words is "one hundred thirty-nine million, nine hundred twenty-one thousand, three hundred fifty-nine".