13900402998949 has 2 divisors, whose sum is σ = 13900402998950. Its totient is φ = 13900402998948.

The previous prime is 13900402998899. The next prime is 13900402998961. The reversal of 13900402998949 is 94989920400931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13256830026049 + 643572972900 = 3640993^2 + 802230^2 .

It is a cyclic number.

It is not a de Polignac number, because 13900402998949 - 2⁹ = 13900402998437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13900402938949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6950201499474 + 6950201499475.

It is an arithmetic number, because the mean of its divisors is an integer number (6950201499475).

Almost surely, 2^{13900402998949} is an apocalyptic number.

It is an amenable number.

13900402998949 is a deficient number, since it is larger than the sum of its proper divisors (1).

13900402998949 is an equidigital number, since it uses as much as digits as its factorization.

13900402998949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 45349632, while the sum is 67.

The spelling of 13900402998949 in words is "thirteen trillion, nine hundred billion, four hundred two million, nine hundred ninety-eight thousand, nine hundred forty-nine".