7406399 has 32 divisors (see below), whose sum is σ = 10214400. Its totient is φ = 5292000.

The previous prime is 7406387. The next prime is 7406411. The reversal of 7406399 is 9936047.

7406399 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (7406387) and next prime (7406411).

It is not a de Polignac number, because 7406399 - 2⁴ = 7406383 is a prime.

It is a super-2 number, since 2×7406399² = 109709492294402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7406309) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48974 + ... + 49124.

It is an arithmetic number, because the mean of its divisors is an integer number (319200).

Almost surely, 2^7406399 is an apocalyptic number.

7406399 is a deficient number, since it is larger than the sum of its proper divisors (2808001).

7406399 is a wasteful number, since it uses less digits than its factorization.

7406399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 38.

The square root of 7406399 is about 2721.4700071836. The cubic root of 7406399 is about 194.9256696760.

The spelling of 7406399 in words is "seven million, four hundred six thousand, three hundred ninety-nine".