75389961 has 8 divisors (see below), whose sum is σ = 102168064. Its totient is φ = 49435920.

The previous prime is 75389957. The next prime is 75389969. The reversal of 75389961 is 16998357.

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

It is not a de Polignac number, because 75389961 - 2² = 75389957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 75389961.

It is not an unprimeable number, because it can be changed into a prime (75389969) 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, 205801 + ... + 206166.

It is an arithmetic number, because the mean of its divisors is an integer number (12771008).

Almost surely, 2^75389961 is an apocalyptic number.

It is an amenable number.

75389961 is a deficient number, since it is larger than the sum of its proper divisors (26778103).

75389961 is a wasteful number, since it uses less digits than its factorization.

75389961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412031.

The product of its digits is 408240, while the sum is 48.

The square root of 75389961 is about 8682.7392567093. The cubic root of 75389961 is about 422.4459714066.

The spelling of 75389961 in words is "seventy-five million, three hundred eighty-nine thousand, nine hundred sixty-one".