40224394 has 12 divisors (see below), whose sum is σ = 70187634. Its totient is φ = 17238984.

The previous prime is 40224389. The next prime is 40224413. The reversal of 40224394 is 49342204.

It can be written as a sum of positive squares in only one way, i.e., 39250225 + 974169 = 6265^2 + 987^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 205129 + ... + 205324.

Almost surely, 2^40224394 is an apocalyptic number.

40224394 is a deficient number, since it is larger than the sum of its proper divisors (29963240).

40224394 is a wasteful number, since it uses less digits than its factorization.

40224394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410469 (or 410462 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

The square root of 40224394 is about 6342.2704136610. The cubic root of 40224394 is about 342.6335110937.

Adding to 40224394 its reverse (49342204), we get a palindrome (89566598).

The spelling of 40224394 in words is "forty million, two hundred twenty-four thousand, three hundred ninety-four".