40099493 has 12 divisors (see below), whose sum is σ = 47009952. Its totient is φ = 34103160.

The previous prime is 40099469. The next prime is 40099513. The reversal of 40099493 is 39499004.

It is not a de Polignac number, because 40099493 - 2⁸ = 40099237 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40099463) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3296 + ... + 9542.

It is an arithmetic number, because the mean of its divisors is an integer number (3917496).

Almost surely, 2^40099493 is an apocalyptic number.

It is an amenable number.

40099493 is a deficient number, since it is larger than the sum of its proper divisors (6910459).

40099493 is a wasteful number, since it uses less digits than its factorization.

40099493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6392 (or 6385 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 40099493 is about 6332.4160476077. The cubic root of 40099493 is about 342.2785056266.

The spelling of 40099493 in words is "forty million, ninety-nine thousand, four hundred ninety-three".