74426397 has 16 divisors (see below), whose sum is σ = 100420608. Its totient is φ = 49029120.

The previous prime is 74426393. The next prime is 74426411. The reversal of 74426397 is 79362447.

It is not a de Polignac number, because 74426397 - 2² = 74426393 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74426393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110253 + ... + 110925.

It is an arithmetic number, because the mean of its divisors is an integer number (6276288).

Almost surely, 2^74426397 is an apocalyptic number.

It is an amenable number.

74426397 is a deficient number, since it is larger than the sum of its proper divisors (25994211).

74426397 is a wasteful number, since it uses less digits than its factorization.

74426397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060.

The product of its digits is 254016, while the sum is 42.

The square root of 74426397 is about 8627.0734898922. The cubic root of 74426397 is about 420.6384790133.

The spelling of 74426397 in words is "seventy-four million, four hundred twenty-six thousand, three hundred ninety-seven".