73426989 has 4 divisors (see below), whose sum is σ = 97902656. Its totient is φ = 48951324.

The previous prime is 73426973. The next prime is 73427021. The reversal of 73426989 is 98962437.

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.

It is not a de Polignac number, because 73426989 - 2⁴ = 73426973 is a prime.

It is a super-2 number, since 2×73426989² = 10783045427212242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73426939) 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, 12237829 + ... + 12237834.

It is an arithmetic number, because the mean of its divisors is an integer number (24475664).

Almost surely, 2^73426989 is an apocalyptic number.

It is an amenable number.

73426989 is a deficient number, since it is larger than the sum of its proper divisors (24475667).

73426989 is a wasteful number, since it uses less digits than its factorization.

73426989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24475666.

The product of its digits is 653184, while the sum is 48.

The square root of 73426989 is about 8568.9549537852. The cubic root of 73426989 is about 418.7471907735.

The spelling of 73426989 in words is "seventy-three million, four hundred twenty-six thousand, nine hundred eighty-nine".