13950208421 has 2 divisors, whose sum is σ = 13950208422. Its totient is φ = 13950208420.

The previous prime is 13950208411. The next prime is 13950208453. The reversal of 13950208421 is 12480205931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13950208321 + 100 = 118111^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 13950208421 - 2¹⁴ = 13950192037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13950208411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6975104210 + 6975104211.

It is an arithmetic number, because the mean of its divisors is an integer number (6975104211).

Almost surely, 2^13950208421 is an apocalyptic number.

It is an amenable number.

13950208421 is a deficient number, since it is larger than the sum of its proper divisors (1).

13950208421 is an equidigital number, since it uses as much as digits as its factorization.

13950208421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 35.

The spelling of 13950208421 in words is "thirteen billion, nine hundred fifty million, two hundred eight thousand, four hundred twenty-one".