7904289 has 8 divisors (see below), whose sum is σ = 10717920. Its totient is φ = 5180096.

The previous prime is 7904279. The next prime is 7904291. The reversal of 7904289 is 9824097.

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

It is a cyclic number.

It is not a de Polignac number, because 7904289 - 2⁷ = 7904161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7904279) 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, 22152 + ... + 22505.

It is an arithmetic number, because the mean of its divisors is an integer number (1339740).

Almost surely, 2^7904289 is an apocalyptic number.

It is an amenable number.

7904289 is a deficient number, since it is larger than the sum of its proper divisors (2813631).

7904289 is a wasteful number, since it uses less digits than its factorization.

7904289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44719.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 7904289 is about 2811.4567398415. The cubic root of 7904289 is about 199.1992062596.

The spelling of 7904289 in words is "seven million, nine hundred four thousand, two hundred eighty-nine".