7398990 has 48 divisors (see below), whose sum is σ = 19375200. Its totient is φ = 1958976.

The previous prime is 7398971. The next prime is 7399003. The reversal of 7398990 is 998937.

It is a happy number.

7398990 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20431 + ... + 20789.

It is an arithmetic number, because the mean of its divisors is an integer number (403650).

Almost surely, 2^7398990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7398990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9687600).

7398990 is an abundant number, since it is smaller than the sum of its proper divisors (11976210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7398990 is a wasteful number, since it uses less digits than its factorization.

7398990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601 (or 598 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 7398990 is about 2720.1084537202. The cubic root of 7398990 is about 194.8606499489.

The spelling of 7398990 in words is "seven million, three hundred ninety-eight thousand, nine hundred ninety".