139844924357 has 16 divisors (see below), whose sum is σ = 148493444400. Its totient is φ = 131243642880.

The previous prime is 139844924273. The next prime is 139844924393. The reversal of 139844924357 is 753429448931.

It can be written as a sum of positive squares in 8 ways, for example, as 14188144996 + 125656779361 = 119114^2 + 354481^2 .

It is a cyclic number.

It is not a de Polignac number, because 139844924357 - 2⁸ = 139844924101 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139844924296 and 139844924305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139844927357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22963769 + ... + 22969857.

It is an arithmetic number, because the mean of its divisors is an integer number (9280840275).

Almost surely, 2^139844924357 is an apocalyptic number.

139844924357 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

139844924357 is a deficient number, since it is larger than the sum of its proper divisors (8648520043).

139844924357 is a wasteful number, since it uses less digits than its factorization.

139844924357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9736.

The product of its digits is 26127360, while the sum is 59.

The spelling of 139844924357 in words is "one hundred thirty-nine billion, eight hundred forty-four million, nine hundred twenty-four thousand, three hundred fifty-seven".