40430066 has 4 divisors (see below), whose sum is σ = 60645102. Its totient is φ = 20215032.

The previous prime is 40430051. The next prime is 40430077. The reversal of 40430066 is 66003404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38700841 + 1729225 = 6221^2 + 1315^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10107515 + ... + 10107518.

Almost surely, 2^40430066 is an apocalyptic number.

40430066 is a deficient number, since it is larger than the sum of its proper divisors (20215036).

40430066 is a wasteful number, since it uses less digits than its factorization.

40430066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20215035.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 40430066 is about 6358.4641227265. The cubic root of 40430066 is about 343.2164935845.

The spelling of 40430066 in words is "forty million, four hundred thirty thousand, sixty-six".