40361866 has 4 divisors (see below), whose sum is σ = 60542802. Its totient is φ = 20180932.

The previous prime is 40361863. The next prime is 40361869. The reversal of 40361866 is 66816304.

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

It is an interprime number because it is at equal distance from previous prime (40361863) and next prime (40361869).

It can be written as a sum of positive squares in only one way, i.e., 28998225 + 11363641 = 5385^2 + 3371^2 .

It is not an unprimeable number, because it can be changed into a prime (40361863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10090465 + ... + 10090468.

Almost surely, 2^40361866 is an apocalyptic number.

40361866 is a deficient number, since it is larger than the sum of its proper divisors (20180936).

40361866 is a wasteful number, since it uses less digits than its factorization.

40361866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20180935.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 40361866 is about 6353.0989288693. The cubic root of 40361866 is about 343.0233985177.

The spelling of 40361866 in words is "forty million, three hundred sixty-one thousand, eight hundred sixty-six".