139795049 has 6 divisors (see below), whose sum is σ = 140313594. Its totient is φ = 139278080.

The previous prime is 139795043. The next prime is 139795057. The reversal of 139795049 is 940597931.

It can be written as a sum of positive squares in only one way, i.e., 136305625 + 3489424 = 11675^2 + 1868^2 .

It is not a de Polignac number, because 139795049 - 2¹² = 139790953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139794994 and 139795012.

It is not an unprimeable number, because it can be changed into a prime (139795043) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 217769 + ... + 218409.

It is an arithmetic number, because the mean of its divisors is an integer number (23385599).

Almost surely, 2^139795049 is an apocalyptic number.

It is an amenable number.

139795049 is a deficient number, since it is larger than the sum of its proper divisors (518545).

139795049 is an frugal number, since it uses more digits than its factorization.

139795049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1575 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 139795049 is about 11823.4956336948. The cubic root of 139795049 is about 518.9959038538.

The spelling of 139795049 in words is "one hundred thirty-nine million, seven hundred ninety-five thousand, forty-nine".