73943893 has 4 divisors (see below), whose sum is σ = 74142508. Its totient is φ = 73745280.

The previous prime is 73943887. The next prime is 73943899. The reversal of 73943893 is 39834937.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39834937 = 83 ⋅479939.

It is an interprime number because it is at equal distance from previous prime (73943887) and next prime (73943899).

It can be written as a sum of positive squares in 2 ways, for example, as 14607684 + 59336209 = 3822^2 + 7703^2 .

It is a cyclic number.

It is not a de Polignac number, because 73943893 - 2²¹ = 71846741 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 (73943899) 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, 98748 + ... + 99493.

It is an arithmetic number, because the mean of its divisors is an integer number (18535627).

Almost surely, 2^73943893 is an apocalyptic number.

It is an amenable number.

73943893 is a deficient number, since it is larger than the sum of its proper divisors (198615).

73943893 is a wasteful number, since it uses less digits than its factorization.

73943893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198614.

The product of its digits is 489888, while the sum is 46.

The square root of 73943893 is about 8599.0634955209. The cubic root of 73943893 is about 419.7275122180.

The spelling of 73943893 in words is "seventy-three million, nine hundred forty-three thousand, eight hundred ninety-three".