7438390 has 16 divisors (see below), whose sum is σ = 13496832. Its totient is φ = 2951424.

The previous prime is 7438381. The next prime is 7438399. The reversal of 7438390 is 938347.

It is an interprime number because it is at equal distance from previous prime (7438381) and next prime (7438399).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7438399) 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, 1659 + ... + 4198.

It is an arithmetic number, because the mean of its divisors is an integer number (843552).

Almost surely, 2^7438390 is an apocalyptic number.

7438390 is a deficient number, since it is larger than the sum of its proper divisors (6058442).

7438390 is a wasteful number, since it uses less digits than its factorization.

7438390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5991.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 7438390 is about 2727.3411961102. The cubic root of 7438390 is about 195.2059187883.

The spelling of 7438390 in words is "seven million, four hundred thirty-eight thousand, three hundred ninety".