73944019 has 16 divisors (see below), whose sum is σ = 78512256. Its totient is φ = 69552000.

The previous prime is 73943993. The next prime is 73944023. The reversal of 73944019 is 91044937.

It is a cyclic number.

It is not a de Polignac number, because 73944019 - 2²¹ = 71846867 is a prime.

It is a super-2 number, since 2×73944019² = 10935435891744722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73944089) 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 15 ways as a sum of consecutive naturals, for example, 175429 + ... + 175849.

It is an arithmetic number, because the mean of its divisors is an integer number (4907016).

Almost surely, 2^73944019 is an apocalyptic number.

73944019 is a deficient number, since it is larger than the sum of its proper divisors (4568237).

73944019 is a wasteful number, since it uses less digits than its factorization.

73944019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 73944019 is about 8599.0708218970. The cubic root of 73944019 is about 419.7277506223.

The spelling of 73944019 in words is "seventy-three million, nine hundred forty-four thousand, nineteen".