2421929399 has 8 divisors (see below), whose sum is σ = 2450766240. Its totient is φ = 2393188000.

The previous prime is 2421929383. The next prime is 2421929431. The reversal of 2421929399 is 9939291242.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2421929399 - 2⁴ = 2421929383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421929329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27854 + ... + 74964.

It is an arithmetic number, because the mean of its divisors is an integer number (306345780).

Almost surely, 2^2421929399 is an apocalyptic number.

2421929399 is a deficient number, since it is larger than the sum of its proper divisors (28836841).

2421929399 is a wasteful number, since it uses less digits than its factorization.

2421929399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47721.

The product of its digits is 629856, while the sum is 50.

The square root of 2421929399 is about 49213.1019038630. The cubic root of 2421929399 is about 1342.9313933469.

The spelling of 2421929399 in words is "two billion, four hundred twenty-one million, nine hundred twenty-nine thousand, three hundred ninety-nine".