40474381 has 2 divisors, whose sum is σ = 40474382. Its totient is φ = 40474380.

The previous prime is 40474363. The next prime is 40474387. The reversal of 40474381 is 18347404.

40474381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31866025 + 8608356 = 5645^2 + 2934^2 .

It is a cyclic number.

It is not a de Polignac number, because 40474381 - 2⁷ = 40474253 is a prime.

It is a super-2 number, since 2×40474381² = 3276351034666322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40474387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20237190 + 20237191.

It is an arithmetic number, because the mean of its divisors is an integer number (20237191).

Almost surely, 2^40474381 is an apocalyptic number.

It is an amenable number.

40474381 is a deficient number, since it is larger than the sum of its proper divisors (1).

40474381 is an equidigital number, since it uses as much as digits as its factorization.

40474381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 40474381 is about 6361.9478935307. The cubic root of 40474381 is about 343.3418465438.

The spelling of 40474381 in words is "forty million, four hundred seventy-four thousand, three hundred eighty-one".