139263953 has 2 divisors, whose sum is σ = 139263954. Its totient is φ = 139263952.

The previous prime is 139263941. The next prime is 139264033. The reversal of 139263953 is 359362931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 127622209 + 11641744 = 11297^2 + 3412^2 .

It is a cyclic number.

It is not a de Polignac number, because 139263953 - 2⁴ = 139263937 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 139263953.

It is not a weakly prime, because it can be changed into another prime (139263923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69631976 + 69631977.

It is an arithmetic number, because the mean of its divisors is an integer number (69631977).

Almost surely, 2^139263953 is an apocalyptic number.

It is an amenable number.

139263953 is a deficient number, since it is larger than the sum of its proper divisors (1).

139263953 is an equidigital number, since it uses as much as digits as its factorization.

139263953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 41.

The square root of 139263953 is about 11801.0149139809. The cubic root of 139263953 is about 518.3378298934.

The spelling of 139263953 in words is "one hundred thirty-nine million, two hundred sixty-three thousand, nine hundred fifty-three".