2421399 has 8 divisors (see below), whose sum is σ = 3250800. Its totient is φ = 1603136.

The previous prime is 2421389. The next prime is 2421403. The reversal of 2421399 is 9931242.

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 2421399 - 2⁴ = 2421383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2421319) 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, 2262 + ... + 3155.

It is an arithmetic number, because the mean of its divisors is an integer number (406350).

2^2421399 is an apocalyptic number.

2421399 is a deficient number, since it is larger than the sum of its proper divisors (829401).

2421399 is a wasteful number, since it uses less digits than its factorization.

2421399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5569.

The product of its digits is 3888, while the sum is 30.

The square root of 2421399 is about 1556.0845092732. The cubic root of 2421399 is about 134.2833352852.

The spelling of 2421399 in words is "two million, four hundred twenty-one thousand, three hundred ninety-nine".