73974809 has 8 divisors (see below), whose sum is σ = 77948640. Its totient is φ = 70009056.

The previous prime is 73974787. The next prime is 73974811. The reversal of 73974809 is 90847937.

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

It is a cyclic number.

It is not a de Polignac number, because 73974809 - 2¹² = 73970713 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73974839) 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, 29717 + ... + 32109.

It is an arithmetic number, because the mean of its divisors is an integer number (9743580).

Almost surely, 2^73974809 is an apocalyptic number.

It is an amenable number.

73974809 is a deficient number, since it is larger than the sum of its proper divisors (3973831).

73974809 is a wasteful number, since it uses less digits than its factorization.

73974809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4039.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 73974809 is about 8600.8609452775. The cubic root of 73974809 is about 419.7860002021.

The spelling of 73974809 in words is "seventy-three million, nine hundred seventy-four thousand, eight hundred nine".