7489978 has 8 divisors (see below), whose sum is σ = 11249280. Its totient is φ = 3740220.

The previous prime is 7489957. The next prime is 7489981. The reversal of 7489978 is 8799847.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93 + ... + 3871.

It is an arithmetic number, because the mean of its divisors is an integer number (1406160).

Almost surely, 2^7489978 is an apocalyptic number.

7489978 is a deficient number, since it is larger than the sum of its proper divisors (3759302).

7489978 is a wasteful number, since it uses less digits than its factorization.

7489978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4772.

The product of its digits is 1016064, while the sum is 52.

The square root of 7489978 is about 2736.7824173653. The cubic root of 7489978 is about 195.6561547417.

The spelling of 7489978 in words is "seven million, four hundred eighty-nine thousand, nine hundred seventy-eight".