139297347 has 48 divisors (see below), whose sum is σ = 241680000. Its totient is φ = 79062480.

The previous prime is 139297309. The next prime is 139297357. The reversal of 139297347 is 743792931.

139297347 is a `hidden beast` number, since 13 + 9 + 297 + 347 = 666.

It is not a de Polignac number, because 139297347 - 2¹⁵ = 139264579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139297357) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 278904 + ... + 279402.

It is an arithmetic number, because the mean of its divisors is an integer number (5035000).

Almost surely, 2^139297347 is an apocalyptic number.

139297347 is a deficient number, since it is larger than the sum of its proper divisors (102382653).

139297347 is a wasteful number, since it uses less digits than its factorization.

139297347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 720 counting only the distinct ones).

The product of its digits is 285768, while the sum is 45.

The square root of 139297347 is about 11802.4297074797. The cubic root of 139297347 is about 518.3792571969.

The spelling of 139297347 in words is "one hundred thirty-nine million, two hundred ninety-seven thousand, three hundred forty-seven".