40897210 has 16 divisors (see below), whose sum is σ = 75605256. Its totient is φ = 15916608.

The previous prime is 40897201. The next prime is 40897211. The reversal of 40897210 is 1279804.

It can be written as a sum of positive squares in 4 ways, for example, as 40106889 + 790321 = 6333^2 + 889^2 .

It is not an unprimeable number, because it can be changed into a prime (40897211) 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 7 ways as a sum of consecutive naturals, for example, 54897 + ... + 55636.

Almost surely, 2^40897210 is an apocalyptic number.

40897210 is a deficient number, since it is larger than the sum of its proper divisors (34708046).

40897210 is a wasteful number, since it uses less digits than its factorization.

40897210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110577.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 40897210 is about 6395.0926498371. The cubic root of 40897210 is about 344.5333184549.

The spelling of 40897210 in words is "forty million, eight hundred ninety-seven thousand, two hundred ten".