139384253 has 2 divisors, whose sum is σ = 139384254. Its totient is φ = 139384252.

The previous prime is 139384249. The next prime is 139384313. The reversal of 139384253 is 352483931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130462084 + 8922169 = 11422^2 + 2987^2 .

It is a cyclic number.

It is not a de Polignac number, because 139384253 - 2² = 139384249 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139389253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69692126 + 69692127.

It is an arithmetic number, because the mean of its divisors is an integer number (69692127).

Almost surely, 2^139384253 is an apocalyptic number.

It is an amenable number.

139384253 is a deficient number, since it is larger than the sum of its proper divisors (1).

139384253 is an equidigital number, since it uses as much as digits as its factorization.

139384253 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 38.

The square root of 139384253 is about 11806.1108329543. The cubic root of 139384253 is about 518.4870383886.

The spelling of 139384253 in words is "one hundred thirty-nine million, three hundred eighty-four thousand, two hundred fifty-three".