11442421399 has 2 divisors, whose sum is σ = 11442421400. Its totient is φ = 11442421398.

The previous prime is 11442421381. The next prime is 11442421423. The reversal of 11442421399 is 99312424411.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11442421399 - 2²⁵ = 11408866967 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11442421349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5721210699 + 5721210700.

It is an arithmetic number, because the mean of its divisors is an integer number (5721210700).

Almost surely, 2^11442421399 is an apocalyptic number.

11442421399 is a deficient number, since it is larger than the sum of its proper divisors (1).

11442421399 is an equidigital number, since it uses as much as digits as its factorization.

11442421399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62208, while the sum is 40.

The spelling of 11442421399 in words is "eleven billion, four hundred forty-two million, four hundred twenty-one thousand, three hundred ninety-nine".