7120389 has 4 divisors (see below), whose sum is σ = 9493856. Its totient is φ = 4746924.

The previous prime is 7120387. The next prime is 7120411. The reversal of 7120389 is 9830217.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 7120389 - 2¹ = 7120387 is a prime.

It is a super-2 number, since 2×7120389² = 101399879022642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7120381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1186729 + ... + 1186734.

It is an arithmetic number, because the mean of its divisors is an integer number (2373464).

Almost surely, 2^7120389 is an apocalyptic number.

It is an amenable number.

7120389 is a deficient number, since it is larger than the sum of its proper divisors (2373467).

7120389 is a wasteful number, since it uses less digits than its factorization.

7120389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373466.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 7120389 is about 2668.4057037864. The cubic root of 7120389 is about 192.3835378080.

The spelling of 7120389 in words is "seven million, one hundred twenty thousand, three hundred eighty-nine".