7402399 has 2 divisors, whose sum is σ = 7402400. Its totient is φ = 7402398.

The previous prime is 7402363. The next prime is 7402403. The reversal of 7402399 is 9932047.

It is a strong prime.

It is an emirp because it is prime and its reverse (9932047) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7402399 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7402309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3701199 + 3701200.

It is an arithmetic number, because the mean of its divisors is an integer number (3701200).

Almost surely, 2^7402399 is an apocalyptic number.

7402399 is a deficient number, since it is larger than the sum of its proper divisors (1).

7402399 is an equidigital number, since it uses as much as digits as its factorization.

7402399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 7402399 is about 2720.7350109851. The cubic root of 7402399 is about 194.8905719591.

The spelling of 7402399 in words is "seven million, four hundred two thousand, three hundred ninety-nine".