40299641 has 2 divisors, whose sum is σ = 40299642. Its totient is φ = 40299640.

The previous prime is 40299619. The next prime is 40299667. The reversal of 40299641 is 14699204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30085225 + 10214416 = 5485^2 + 3196^2 .

It is a cyclic number.

It is not a de Polignac number, because 40299641 - 2¹⁰ = 40298617 is a prime.

It is a super-2 number, since 2×40299641² = 3248122129457762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (40299601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20149820 + 20149821.

It is an arithmetic number, because the mean of its divisors is an integer number (20149821).

Almost surely, 2^40299641 is an apocalyptic number.

It is an amenable number.

40299641 is a deficient number, since it is larger than the sum of its proper divisors (1).

40299641 is an equidigital number, since it uses as much as digits as its factorization.

40299641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 40299641 is about 6348.1998235720. The cubic root of 40299641 is about 342.8470306459.

The spelling of 40299641 in words is "forty million, two hundred ninety-nine thousand, six hundred forty-one".