75299409 has 16 divisors (see below), whose sum is σ = 118117440. Its totient is φ = 47246400.

The previous prime is 75299383. The next prime is 75299417. The reversal of 75299409 is 90499257.

It is not a de Polignac number, because 75299409 - 2⁵ = 75299377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75299459) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81567 + ... + 82484.

It is an arithmetic number, because the mean of its divisors is an integer number (7382340).

Almost surely, 2^75299409 is an apocalyptic number.

It is an amenable number.

75299409 is a deficient number, since it is larger than the sum of its proper divisors (42818031).

75299409 is a wasteful number, since it uses less digits than its factorization.

75299409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164077 (or 164071 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 75299409 is about 8677.5232065377. The cubic root of 75299409 is about 422.2767682710.

The spelling of 75299409 in words is "seventy-five million, two hundred ninety-nine thousand, four hundred nine".