74250399 has 4 divisors (see below), whose sum is σ = 99000536. Its totient is φ = 49500264.

The previous prime is 74250391. The next prime is 74250409. The reversal of 74250399 is 99305247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99305247 = 3 ⋅33101749.

It is not a de Polignac number, because 74250399 - 2³ = 74250391 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 (74250391) 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, 12375064 + ... + 12375069.

It is an arithmetic number, because the mean of its divisors is an integer number (24750134).

Almost surely, 2^74250399 is an apocalyptic number.

74250399 is a deficient number, since it is larger than the sum of its proper divisors (24750137).

74250399 is a wasteful number, since it uses less digits than its factorization.

74250399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24750136.

The product of its (nonzero) digits is 68040, while the sum is 39.

The square root of 74250399 is about 8616.8671221042. The cubic root of 74250399 is about 420.3066524681.

The spelling of 74250399 in words is "seventy-four million, two hundred fifty thousand, three hundred ninety-nine".