7075021409 has 4 divisors (see below), whose sum is σ = 7076158404. Its totient is φ = 7073884416.

The previous prime is 7075021399. The next prime is 7075021423. The reversal of 7075021409 is 9041205707.

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 4552470784 + 2522550625 = 67472^2 + 50225^2 .

It is a cyclic number.

It is not a de Polignac number, because 7075021409 - 2³² = 2780054113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7075021439) 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, 559112 + ... + 571625.

It is an arithmetic number, because the mean of its divisors is an integer number (1769039601).

Almost surely, 2^7075021409 is an apocalyptic number.

It is an amenable number.

7075021409 is a deficient number, since it is larger than the sum of its proper divisors (1136995).

7075021409 is a wasteful number, since it uses less digits than its factorization.

7075021409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1136994.

The product of its (nonzero) digits is 17640, while the sum is 35.

The square root of 7075021409 is about 84113.1464695026. The cubic root of 7075021409 is about 1919.7407608070.

The spelling of 7075021409 in words is "seven billion, seventy-five million, twenty-one thousand, four hundred nine".