7112409 has 8 divisors (see below), whose sum is σ = 10041120. Its totient is φ = 4462656.

The previous prime is 7112389. The next prime is 7112411. The reversal of 7112409 is 9042117.

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

It is not a de Polignac number, because 7112409 - 2⁵ = 7112377 is a prime.

It is an Ulam number.

7112409 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (7112429) 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, 69679 + ... + 69780.

It is an arithmetic number, because the mean of its divisors is an integer number (1255140).

Almost surely, 2^7112409 is an apocalyptic number.

It is an amenable number.

7112409 is a deficient number, since it is larger than the sum of its proper divisors (2928711).

7112409 is a wasteful number, since it uses less digits than its factorization.

7112409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139479.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 7112409 is about 2666.9100097304. The cubic root of 7112409 is about 192.3116412440.

The spelling of 7112409 in words is "seven million, one hundred twelve thousand, four hundred nine".