40249233 has 6 divisors (see below), whose sum is σ = 58137794. Its totient is φ = 26832816.

The previous prime is 40249211. The next prime is 40249243. The reversal of 40249233 is 33294204.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 39350529 + 898704 = 6273^2 + 948^2 .

It is not a de Polignac number, because 40249233 - 2¹⁶ = 40183697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40249197 and 40249206.

It is not an unprimeable number, because it can be changed into a prime (40249243) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2236060 + ... + 2236077.

Almost surely, 2^40249233 is an apocalyptic number.

It is an amenable number.

40249233 is a deficient number, since it is larger than the sum of its proper divisors (17888561).

40249233 is a wasteful number, since it uses less digits than its factorization.

40249233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4472143 (or 4472140 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 40249233 is about 6344.2283218686. The cubic root of 40249233 is about 342.7040232194.

The spelling of 40249233 in words is "forty million, two hundred forty-nine thousand, two hundred thirty-three".