40347841 has 2 divisors, whose sum is σ = 40347842. Its totient is φ = 40347840.

The previous prime is 40347763. The next prime is 40347863. The reversal of 40347841 is 14874304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40056241 + 291600 = 6329^2 + 540^2 .

It is a cyclic number.

It is not a de Polignac number, because 40347841 - 2¹⁵ = 40315073 is a prime.

It is a super-2 number, since 2×40347841² = 3255896546722562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40347641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20173920 + 20173921.

It is an arithmetic number, because the mean of its divisors is an integer number (20173921).

Almost surely, 2^40347841 is an apocalyptic number.

It is an amenable number.

40347841 is a deficient number, since it is larger than the sum of its proper divisors (1).

40347841 is an equidigital number, since it uses as much as digits as its factorization.

40347841 is an evil number, because the sum of its binary digits is even.

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

The square root of 40347841 is about 6351.9950409301. The cubic root of 40347841 is about 342.9836624914.

The spelling of 40347841 in words is "forty million, three hundred forty-seven thousand, eight hundred forty-one".