139324279949 has 2 divisors, whose sum is σ = 139324279950. Its totient is φ = 139324279948.

The previous prime is 139324279891. The next prime is 139324279957. The reversal of 139324279949 is 949972423931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110566225225 + 28758054724 = 332515^2 + 169582^2 .

It is a cyclic number.

It is not a de Polignac number, because 139324279949 - 2²⁰ = 139323231373 is a prime.

It is a super-2 number, since 2×139324279949² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 139324279891 and 139324279900.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139324279049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69662139974 + 69662139975.

It is an arithmetic number, because the mean of its divisors is an integer number (69662139975).

Almost surely, 2^139324279949 is an apocalyptic number.

It is an amenable number.

139324279949 is a deficient number, since it is larger than the sum of its proper divisors (1).

139324279949 is an equidigital number, since it uses as much as digits as its factorization.

139324279949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26453952, while the sum is 62.

The spelling of 139324279949 in words is "one hundred thirty-nine billion, three hundred twenty-four million, two hundred seventy-nine thousand, nine hundred forty-nine".