74026789 has 4 divisors (see below), whose sum is σ = 78381324. Its totient is φ = 69672256.

The previous prime is 74026753. The next prime is 74026807. The reversal of 74026789 is 98762047.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98762047 = 59 ⋅1673933.

It can be written as a sum of positive squares in 2 ways, for example, as 37822500 + 36204289 = 6150^2 + 6017^2 .

It is a de Polignac number, because none of the positive numbers 2^k-74026789 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 (74026889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2177242 + ... + 2177275.

It is an arithmetic number, because the mean of its divisors is an integer number (19595331).

Almost surely, 2^74026789 is an apocalyptic number.

It is an amenable number.

74026789 is a deficient number, since it is larger than the sum of its proper divisors (4354535).

74026789 is a wasteful number, since it uses less digits than its factorization.

74026789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4354534.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 74026789 is about 8603.8822051444. The cubic root of 74026789 is about 419.8843010863.

The spelling of 74026789 in words is "seventy-four million, twenty-six thousand, seven hundred eighty-nine".