13899757 has 2 divisors, whose sum is σ = 13899758. Its totient is φ = 13899756.

The previous prime is 13899737. The next prime is 13899799. The reversal of 13899757 is 75799831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13682601 + 217156 = 3699^2 + 466^2 .

It is a cyclic number.

It is not a de Polignac number, because 13899757 - 2⁷ = 13899629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13899757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13899737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6949878 + 6949879.

It is an arithmetic number, because the mean of its divisors is an integer number (6949879).

Almost surely, 2^13899757 is an apocalyptic number.

It is an amenable number.

13899757 is a deficient number, since it is larger than the sum of its proper divisors (1).

13899757 is an equidigital number, since it uses as much as digits as its factorization.

13899757 is an evil number, because the sum of its binary digits is even.

The product of its digits is 476280, while the sum is 49.

The square root of 13899757 is about 3728.2377874808. The cubic root of 13899757 is about 240.4376101522.

The spelling of 13899757 in words is "thirteen million, eight hundred ninety-nine thousand, seven hundred fifty-seven".