40296521 has 4 divisors (see below), whose sum is σ = 40673232. Its totient is φ = 39919812.

The previous prime is 40296499. The next prime is 40296523. The reversal of 40296521 is 12569204.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40296521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40296523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188195 + ... + 188408.

It is an arithmetic number, because the mean of its divisors is an integer number (10168308).

Almost surely, 2^40296521 is an apocalyptic number.

It is an amenable number.

40296521 is a deficient number, since it is larger than the sum of its proper divisors (376711).

40296521 is a wasteful number, since it uses less digits than its factorization.

40296521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376710.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 40296521 is about 6347.9540798591. The cubic root of 40296521 is about 342.8381826734.

The spelling of 40296521 in words is "forty million, two hundred ninety-six thousand, five hundred twenty-one".