40409377 has 2 divisors, whose sum is σ = 40409378. Its totient is φ = 40409376.

The previous prime is 40409353. The next prime is 40409381. The reversal of 40409377 is 77390404.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28740321 + 11669056 = 5361^2 + 3416^2 .

It is a cyclic number.

It is not a de Polignac number, because 40409377 - 2⁷ = 40409249 is a prime.

It is not a weakly prime, because it can be changed into another prime (40409387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20204688 + 20204689.

It is an arithmetic number, because the mean of its divisors is an integer number (20204689).

Almost surely, 2^40409377 is an apocalyptic number.

It is an amenable number.

40409377 is a deficient number, since it is larger than the sum of its proper divisors (1).

40409377 is an equidigital number, since it uses as much as digits as its factorization.

40409377 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 40409377 is about 6356.8370279566. The cubic root of 40409377 is about 343.1579396559.

The spelling of 40409377 in words is "forty million, four hundred nine thousand, three hundred seventy-seven".