40069210 has 16 divisors (see below), whose sum is σ = 72313416. Its totient is φ = 15985728.

The previous prime is 40069199. The next prime is 40069217. The reversal of 40069210 is 1296004.

It can be written as a sum of positive squares in 4 ways, for example, as 34774609 + 5294601 = 5897^2 + 2301^2 .

It is not an unprimeable number, because it can be changed into a prime (40069217) 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, 1077 + ... + 9016.

Almost surely, 2^40069210 is an apocalyptic number.

40069210 is a deficient number, since it is larger than the sum of its proper divisors (32244206).

40069210 is a wasteful number, since it uses less digits than its factorization.

40069210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10497.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 40069210 is about 6330.0244865245. The cubic root of 40069210 is about 342.1923214085.

The spelling of 40069210 in words is "forty million, sixty-nine thousand, two hundred ten".