40097215 has 8 divisors (see below), whose sum is σ = 48153168. Its totient is φ = 32053440.

The previous prime is 40097209. The next prime is 40097231. The reversal of 40097215 is 51279004.

It is a happy number.

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

It is not a de Polignac number, because 40097215 - 2³ = 40097207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7579 + ... + 11731.

It is an arithmetic number, because the mean of its divisors is an integer number (6019146).

Almost surely, 2^40097215 is an apocalyptic number.

40097215 is a deficient number, since it is larger than the sum of its proper divisors (8055953).

40097215 is a wasteful number, since it uses less digits than its factorization.

40097215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6089.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 40097215 is about 6332.2361768968. The cubic root of 40097215 is about 342.2720240384.

The spelling of 40097215 in words is "forty million, ninety-seven thousand, two hundred fifteen".