75139189 has 8 divisors (see below), whose sum is σ = 77014080. Its totient is φ = 73270176.

The previous prime is 75139187. The next prime is 75139199. The reversal of 75139189 is 98193157.

75139189 = 406² + 407² + ... + 663².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 75139189 - 2¹ = 75139187 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75139187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35832 + ... + 37870.

It is an arithmetic number, because the mean of its divisors is an integer number (9626760).

Almost surely, 2^75139189 is an apocalyptic number.

It is an amenable number.

75139189 is a deficient number, since it is larger than the sum of its proper divisors (1874891).

75139189 is a wasteful number, since it uses less digits than its factorization.

75139189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2939.

The product of its digits is 68040, while the sum is 43.

The square root of 75139189 is about 8668.2863935152. The cubic root of 75139189 is about 421.9770526519.

The spelling of 75139189 in words is "seventy-five million, one hundred thirty-nine thousand, one hundred eighty-nine".