40897619 has 8 divisors (see below), whose sum is σ = 46894848. Its totient is φ = 34939080.

The previous prime is 40897613. The next prime is 40897621. The reversal of 40897619 is 91679804.

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 40897619 - 2²⁴ = 24120403 is a prime.

It is a super-2 number, since 2×40897619² = 3345230479738322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40897619.

It is not an unprimeable number, because it can be changed into a prime (40897613) 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, 7367 + ... + 11664.

It is an arithmetic number, because the mean of its divisors is an integer number (5861856).

Almost surely, 2^40897619 is an apocalyptic number.

40897619 is a deficient number, since it is larger than the sum of its proper divisors (5997229).

40897619 is a wasteful number, since it uses less digits than its factorization.

40897619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19345.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 40897619 is about 6395.1246274017. The cubic root of 40897619 is about 344.5344669738.

The spelling of 40897619 in words is "forty million, eight hundred ninety-seven thousand, six hundred nineteen".