75138389 has 8 divisors (see below), whose sum is σ = 78627072. Its totient is φ = 71716320.

The previous prime is 75138353. The next prime is 75138403. The reversal of 75138389 is 98383157.

It is a happy number.

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 75138389 - 2¹⁶ = 75072853 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75131389) 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, 14339 + ... + 18864.

It is an arithmetic number, because the mean of its divisors is an integer number (9828384).

Almost surely, 2^75138389 is an apocalyptic number.

It is an amenable number.

75138389 is a deficient number, since it is larger than the sum of its proper divisors (3488683).

75138389 is a wasteful number, since it uses less digits than its factorization.

75138389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33307.

The product of its digits is 181440, while the sum is 44.

The square root of 75138389 is about 8668.2402481703. The cubic root of 75138389 is about 421.9755550630.

The spelling of 75138389 in words is "seventy-five million, one hundred thirty-eight thousand, three hundred eighty-nine".