40297915 has 8 divisors (see below), whose sum is σ = 55265760. Its totient is φ = 27632832.

The previous prime is 40297903. The next prime is 40297919. The reversal of 40297915 is 51979204.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40297915 - 2¹⁷ = 40166843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40297919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 575650 + ... + 575719.

It is an arithmetic number, because the mean of its divisors is an integer number (6908220).

Almost surely, 2^40297915 is an apocalyptic number.

40297915 is a deficient number, since it is larger than the sum of its proper divisors (14967845).

40297915 is a wasteful number, since it uses less digits than its factorization.

40297915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1151381.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 40297915 is about 6348.0638780655. The cubic root of 40297915 is about 342.8421359586.

The spelling of 40297915 in words is "forty million, two hundred ninety-seven thousand, nine hundred fifteen".