7405789 has 4 divisors (see below), whose sum is σ = 7586460. Its totient is φ = 7225120.

The previous prime is 7405771. The next prime is 7405799. The reversal of 7405789 is 9875047.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4481689 + 2924100 = 2117^2 + 1710^2 .

It is a cyclic number.

It is not a de Polignac number, because 7405789 - 2⁵ = 7405757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7405709) 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, 90274 + ... + 90355.

It is an arithmetic number, because the mean of its divisors is an integer number (1896615).

Almost surely, 2^7405789 is an apocalyptic number.

It is an amenable number.

7405789 is a deficient number, since it is larger than the sum of its proper divisors (180671).

7405789 is a wasteful number, since it uses less digits than its factorization.

7405789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180670.

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 7405789 is about 2721.3579330915. The cubic root of 7405789 is about 194.9203180909.

The spelling of 7405789 in words is "seven million, four hundred five thousand, seven hundred eighty-nine".