139501957 has 8 divisors (see below), whose sum is σ = 159726656. Its totient is φ = 119351232.

The previous prime is 139501927. The next prime is 139501961. The reversal of 139501957 is 759105931.

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

It is not a de Polignac number, because 139501957 - 2¹⁵ = 139469189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139501927) 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, 14388 + ... + 22045.

It is an arithmetic number, because the mean of its divisors is an integer number (19965832).

Almost surely, 2^139501957 is an apocalyptic number.

It is an amenable number.

139501957 is a deficient number, since it is larger than the sum of its proper divisors (20224699).

139501957 is an equidigital number, since it uses as much as digits as its factorization.

139501957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36987.

The product of its (nonzero) digits is 42525, while the sum is 40.

The square root of 139501957 is about 11811.0946571433. The cubic root of 139501957 is about 518.6329439855.

The spelling of 139501957 in words is "one hundred thirty-nine million, five hundred one thousand, nine hundred fifty-seven".