7422399 has 18 divisors (see below), whose sum is σ = 11214840. Its totient is φ = 4730088.

The previous prime is 7422397. The next prime is 7422403. The reversal of 7422399 is 9932247.

It is not a de Polignac number, because 7422399 - 2¹ = 7422397 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7422391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3982 + ... + 5540.

Almost surely, 2^7422399 is an apocalyptic number.

7422399 is a deficient number, since it is larger than the sum of its proper divisors (3792441).

7422399 is a wasteful number, since it uses less digits than its factorization.

7422399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1611 (or 1585 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 7422399 is about 2724.4080090911. The cubic root of 7422399 is about 195.0659343110.

The spelling of 7422399 in words is "seven million, four hundred twenty-two thousand, three hundred ninety-nine".