40873793 has 4 divisors (see below), whose sum is σ = 41013588. Its totient is φ = 40734000.

The previous prime is 40873787. The next prime is 40873823. The reversal of 40873793 is 39737804.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38291344 + 2582449 = 6188^2 + 1607^2 .

It is a cyclic number.

It is not a de Polignac number, because 40873793 - 2²⁰ = 39825217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40873793.

It is not an unprimeable number, because it can be changed into a prime (40873193) 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, 69458 + ... + 70043.

It is an arithmetic number, because the mean of its divisors is an integer number (10253397).

Almost surely, 2^40873793 is an apocalyptic number.

It is an amenable number.

40873793 is a deficient number, since it is larger than the sum of its proper divisors (139795).

40873793 is a wasteful number, since it uses less digits than its factorization.

40873793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139794.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 40873793 is about 6393.2615307056. The cubic root of 40873793 is about 344.4675480591.

The spelling of 40873793 in words is "forty million, eight hundred seventy-three thousand, seven hundred ninety-three".