75036389 has 2 divisors, whose sum is σ = 75036390. Its totient is φ = 75036388.

The previous prime is 75036371. The next prime is 75036391. The reversal of 75036389 is 98363057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63760225 + 11276164 = 7985^2 + 3358^2 .

It is a cyclic number.

It is not a de Polignac number, because 75036389 - 2¹⁶ = 74970853 is a prime.

Together with 75036391, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75036319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37518194 + 37518195.

It is an arithmetic number, because the mean of its divisors is an integer number (37518195).

Almost surely, 2^75036389 is an apocalyptic number.

It is an amenable number.

75036389 is a deficient number, since it is larger than the sum of its proper divisors (1).

75036389 is an equidigital number, since it uses as much as digits as its factorization.

75036389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 75036389 is about 8662.3547029662. The cubic root of 75036389 is about 421.7845253372.

The spelling of 75036389 in words is "seventy-five million, thirty-six thousand, three hundred eighty-nine".