75454393 has 4 divisors (see below), whose sum is σ = 86233600. Its totient is φ = 64675188.

The previous prime is 75454369. The next prime is 75454399. The reversal of 75454393 is 39345457.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 39345457 = 131 ⋅300347.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75454393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75454399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5389593 + ... + 5389606.

It is an arithmetic number, because the mean of its divisors is an integer number (21558400).

Almost surely, 2^75454393 is an apocalyptic number.

It is an amenable number.

75454393 is a deficient number, since it is larger than the sum of its proper divisors (10779207).

75454393 is a wasteful number, since it uses less digits than its factorization.

75454393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10779206.

The product of its digits is 226800, while the sum is 40.

The square root of 75454393 is about 8686.4488141012. The cubic root of 75454393 is about 422.5662848980.

The spelling of 75454393 in words is "seventy-five million, four hundred fifty-four thousand, three hundred ninety-three".