40380057 has 6 divisors (see below), whose sum is σ = 58326762. Its totient is φ = 26920032.

The previous prime is 40380047. The next prime is 40380059. The reversal of 40380057 is 75008304.

It can be written as a sum of positive squares in only one way, i.e., 40182921 + 197136 = 6339^2 + 444^2 .

It is not a de Polignac number, because 40380057 - 2⁶ = 40379993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40380057.

It is not an unprimeable number, because it can be changed into a prime (40380059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2243328 + ... + 2243345.

It is an arithmetic number, because the mean of its divisors is an integer number (9721127).

Almost surely, 2^40380057 is an apocalyptic number.

It is an amenable number.

40380057 is a deficient number, since it is larger than the sum of its proper divisors (17946705).

40380057 is a wasteful number, since it uses less digits than its factorization.

40380057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4486679 (or 4486676 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 40380057 is about 6354.5304311176. The cubic root of 40380057 is about 343.0749240627.

The spelling of 40380057 in words is "forty million, three hundred eighty thousand, fifty-seven".