40380799 has 4 divisors (see below), whose sum is σ = 40446864. Its totient is φ = 40314736.

The previous prime is 40380787. The next prime is 40380853. The reversal of 40380799 is 99708304.

40380799 = T₅₁₈₇ + T₅₁₈₈ + T₅₁₈₉.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40380799 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40380749) 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, 32107 + ... + 33340.

It is an arithmetic number, because the mean of its divisors is an integer number (10111716).

Almost surely, 2^40380799 is an apocalyptic number.

40380799 is the 5189-th centered triangular number.

40380799 is a deficient number, since it is larger than the sum of its proper divisors (66065).

40380799 is an equidigital number, since it uses as much as digits as its factorization.

40380799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66064.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 40380799 is about 6354.5888143923. The cubic root of 40380799 is about 343.0770254304.

The spelling of 40380799 in words is "forty million, three hundred eighty thousand, seven hundred ninety-nine".