40023773 has 2 divisors, whose sum is σ = 40023774. Its totient is φ = 40023772.

The previous prime is 40023769. The next prime is 40023787. The reversal of 40023773 is 37732004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35366809 + 4656964 = 5947^2 + 2158^2 .

It is a cyclic number.

It is not a de Polignac number, because 40023773 - 2² = 40023769 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40023733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20011886 + 20011887.

It is an arithmetic number, because the mean of its divisors is an integer number (20011887).

Almost surely, 2^40023773 is an apocalyptic number.

It is an amenable number.

40023773 is a deficient number, since it is larger than the sum of its proper divisors (1).

40023773 is an equidigital number, since it uses as much as digits as its factorization.

40023773 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3528, while the sum is 26.

The square root of 40023773 is about 6326.4344618434. The cubic root of 40023773 is about 342.0629280145.

Adding to 40023773 its reverse (37732004), we get a palindrome (77755777).

The spelling of 40023773 in words is "forty million, twenty-three thousand, seven hundred seventy-three".