139348737 has 24 divisors (see below), whose sum is σ = 223310880. Its totient is φ = 83018880.

The previous prime is 139348723. The next prime is 139348739. The reversal of 139348737 is 737843931.

139348737 is a `hidden beast` number, since 139 + 3 + 487 + 37 = 666.

It is not a de Polignac number, because 139348737 - 2⁴ = 139348721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139348692 and 139348701.

It is not an unprimeable number, because it can be changed into a prime (139348739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6088 + ... + 17769.

It is an arithmetic number, because the mean of its divisors is an integer number (9304620).

Almost surely, 2^139348737 is an apocalyptic number.

It is an amenable number.

139348737 is a deficient number, since it is larger than the sum of its proper divisors (83962143).

139348737 is a wasteful number, since it uses less digits than its factorization.

139348737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23933 (or 23930 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 139348737 is about 11804.6066008148. The cubic root of 139348737 is about 518.4429967088.

The spelling of 139348737 in words is "one hundred thirty-nine million, three hundred forty-eight thousand, seven hundred thirty-seven".