40291799 has 4 divisors (see below), whose sum is σ = 42412440. Its totient is φ = 38171160.

The previous prime is 40291793. The next prime is 40291841. The reversal of 40291799 is 99719204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40291799 - 2⁸ = 40291543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40291793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1060292 + ... + 1060329.

It is an arithmetic number, because the mean of its divisors is an integer number (10603110).

Almost surely, 2^40291799 is an apocalyptic number.

40291799 is a deficient number, since it is larger than the sum of its proper divisors (2120641).

40291799 is a wasteful number, since it uses less digits than its factorization.

40291799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120640.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 40291799 is about 6347.5821381058. The cubic root of 40291799 is about 342.8247907387.

The spelling of 40291799 in words is "forty million, two hundred ninety-one thousand, seven hundred ninety-nine".