75400349 has 8 divisors (see below), whose sum is σ = 76332960. Its totient is φ = 74473776.

The previous prime is 75400343. The next prime is 75400363. The reversal of 75400349 is 94300457.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75400349 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 (75400343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26762 + ... + 29444.

It is an arithmetic number, because the mean of its divisors is an integer number (9541620).

Almost surely, 2^75400349 is an apocalyptic number.

It is an amenable number.

75400349 is a deficient number, since it is larger than the sum of its proper divisors (932611).

75400349 is a wasteful number, since it uses less digits than its factorization.

75400349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3019.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 75400349 is about 8683.3374344200. The cubic root of 75400349 is about 422.4653734912.

The spelling of 75400349 in words is "seventy-five million, four hundred thousand, three hundred forty-nine".