9040394 has 12 divisors (see below), whose sum is σ = 14905842. Its totient is φ = 4109160.

The previous prime is 9040331. The next prime is 9040397. The reversal of 9040394 is 4930409.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 8497225 + 543169 = 2915^2 + 737^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (9040397) 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, 18437 + ... + 18920.

Almost surely, 2^9040394 is an apocalyptic number.

9040394 is a deficient number, since it is larger than the sum of its proper divisors (5865448).

9040394 is a wasteful number, since it uses less digits than its factorization.

9040394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37381 (or 37370 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 9040394 is about 3006.7247961860. The cubic root of 9040394 is about 208.3191138384.

The spelling of 9040394 in words is "nine million, forty thousand, three hundred ninety-four".