40099326 has 24 divisors (see below), whose sum is σ = 81760392. Its totient is φ = 13107600.

The previous prime is 40099313. The next prime is 40099331. The reversal of 40099326 is 62399004.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120981 + ... + 121311.

It is an arithmetic number, because the mean of its divisors is an integer number (3406683).

Almost surely, 2^40099326 is an apocalyptic number.

40099326 is an abundant number, since it is smaller than the sum of its proper divisors (41661066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40099326 is an equidigital number, since it uses as much as digits as its factorization.

40099326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 40099326 is about 6332.4028614737. The cubic root of 40099326 is about 342.2780304702.

The spelling of 40099326 in words is "forty million, ninety-nine thousand, three hundred twenty-six".