139672490869 has 2 divisors, whose sum is σ = 139672490870. Its totient is φ = 139672490868.

The previous prime is 139672490843. The next prime is 139672490873. The reversal of 139672490869 is 968094276931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 89075387025 + 50597103844 = 298455^2 + 224938^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139672490869 is a prime.

It is a super-2 number, since 2×139672490869² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 139672490869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139672490899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69836245434 + 69836245435.

It is an arithmetic number, because the mean of its divisors is an integer number (69836245435).

Almost surely, 2^139672490869 is an apocalyptic number.

It is an amenable number.

139672490869 is a deficient number, since it is larger than the sum of its proper divisors (1).

139672490869 is an equidigital number, since it uses as much as digits as its factorization.

139672490869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 35271936, while the sum is 64.

The spelling of 139672490869 in words is "one hundred thirty-nine billion, six hundred seventy-two million, four hundred ninety thousand, eight hundred sixty-nine".