40897229 has 4 divisors (see below), whose sum is σ = 40926720. Its totient is φ = 40867740.

The previous prime is 40897211. The next prime is 40897231. The reversal of 40897229 is 92279804.

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 not a de Polignac number, because 40897229 - 2¹² = 40893133 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40897249) 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, 12557 + ... + 15474.

It is an arithmetic number, because the mean of its divisors is an integer number (10231680).

Almost surely, 2^40897229 is an apocalyptic number.

It is an amenable number.

40897229 is a deficient number, since it is larger than the sum of its proper divisors (29491).

40897229 is a wasteful number, since it uses less digits than its factorization.

40897229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29490.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 40897229 is about 6395.0941353509. The cubic root of 40897229 is about 344.5333718092.

The spelling of 40897229 in words is "forty million, eight hundred ninety-seven thousand, two hundred twenty-nine".