73916421 has 8 divisors (see below), whose sum is σ = 98990304. Its totient is φ = 49060080.

The previous prime is 73916419. The next prime is 73916443. The reversal of 73916421 is 12461937.

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

It is not a de Polignac number, because 73916421 - 2¹ = 73916419 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73916461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53590 + ... + 54951.

It is an arithmetic number, because the mean of its divisors is an integer number (12373788).

Almost surely, 2^73916421 is an apocalyptic number.

It is an amenable number.

73916421 is a deficient number, since it is larger than the sum of its proper divisors (25073883).

73916421 is a wasteful number, since it uses less digits than its factorization.

73916421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108771.

The product of its digits is 9072, while the sum is 33.

The square root of 73916421 is about 8597.4659638756. The cubic root of 73916421 is about 419.6755260339.

The spelling of 73916421 in words is "seventy-three million, nine hundred sixteen thousand, four hundred twenty-one".