75189869 has 2 divisors, whose sum is σ = 75189870. Its totient is φ = 75189868.

The previous prime is 75189853. The next prime is 75189871. The reversal of 75189869 is 96898157.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57229225 + 17960644 = 7565^2 + 4238^2 .

It is a cyclic number.

It is not a de Polignac number, because 75189869 - 2⁴ = 75189853 is a prime.

It is a super-2 number, since 2×75189869² = 11307032800474322, which contains 22 as substring.

Together with 75189871, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 75189869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75189839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37594934 + 37594935.

It is an arithmetic number, because the mean of its divisors is an integer number (37594935).

Almost surely, 2^75189869 is an apocalyptic number.

It is an amenable number.

75189869 is a deficient number, since it is larger than the sum of its proper divisors (1).

75189869 is an equidigital number, since it uses as much as digits as its factorization.

75189869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 53.

The square root of 75189869 is about 8671.2092005671. The cubic root of 75189869 is about 422.0719032485.

The spelling of 75189869 in words is "seventy-five million, one hundred eighty-nine thousand, eight hundred sixty-nine".