7479439 has 32 divisors (see below), whose sum is σ = 9455616. Its totient is φ = 5829120.

The previous prime is 7479431. The next prime is 7479467. The reversal of 7479439 is 9349747.

It is a happy number.

It is not a de Polignac number, because 7479439 - 2³ = 7479431 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7479395 and 7479404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7479431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 159114 + ... + 159160.

It is an arithmetic number, because the mean of its divisors is an integer number (295488).

Almost surely, 2^7479439 is an apocalyptic number.

7479439 is a deficient number, since it is larger than the sum of its proper divisors (1976177).

7479439 is a wasteful number, since it uses less digits than its factorization.

7479439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135.

The product of its digits is 190512, while the sum is 43.

The square root of 7479439 is about 2734.8563033549. The cubic root of 7479439 is about 195.5643436970.

The spelling of 7479439 in words is "seven million, four hundred seventy-nine thousand, four hundred thirty-nine".