139248697 has 8 divisors (see below), whose sum is σ = 159522752. Its totient is φ = 119070000.

The previous prime is 139248689. The next prime is 139248709. The reversal of 139248697 is 796842931.

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

It is not a de Polignac number, because 139248697 - 2³ = 139248689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139248697.

It is not an unprimeable number, because it can be changed into a prime (139248607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20679 + ... + 26572.

It is an arithmetic number, because the mean of its divisors is an integer number (19940344).

Almost surely, 2^139248697 is an apocalyptic number.

It is an amenable number.

139248697 is a deficient number, since it is larger than the sum of its proper divisors (20274055).

139248697 is an equidigital number, since it uses as much as digits as its factorization.

139248697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47679.

The product of its digits is 653184, while the sum is 49.

The square root of 139248697 is about 11800.3685111949. The cubic root of 139248697 is about 518.3189016866.

The spelling of 139248697 in words is "one hundred thirty-nine million, two hundred forty-eight thousand, six hundred ninety-seven".