139920747239 has 16 divisors (see below), whose sum is σ = 172968811008. Its totient is φ = 110218815072.

The previous prime is 139920747173. The next prime is 139920747257. The reversal of 139920747239 is 932747029931.

It is a cyclic number.

It is not a de Polignac number, because 139920747239 - 2¹² = 139920743143 is a prime.

It is a super-2 number, since 2×139920747239² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139920747269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3366107 + ... + 3407420.

It is an arithmetic number, because the mean of its divisors is an integer number (10810550688).

Almost surely, 2^139920747239 is an apocalyptic number.

139920747239 is a deficient number, since it is larger than the sum of its proper divisors (33048063769).

139920747239 is a wasteful number, since it uses less digits than its factorization.

139920747239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6773774.

The product of its (nonzero) digits is 5143824, while the sum is 56.

The spelling of 139920747239 in words is "one hundred thirty-nine billion, nine hundred twenty million, seven hundred forty-seven thousand, two hundred thirty-nine".