40010394 has 24 divisors (see below), whose sum is σ = 82258848. Its totient is φ = 12973680.

The previous prime is 40010393. The next prime is 40010441. The reversal of 40010394 is 49301004.

It is a self number, because there is not a number n which added to its sum of digits gives 40010394.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40010393) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5779 + ... + 10649.

It is an arithmetic number, because the mean of its divisors is an integer number (3427452).

Almost surely, 2^40010394 is an apocalyptic number.

40010394 is an abundant number, since it is smaller than the sum of its proper divisors (42248454).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40010394 is a wasteful number, since it uses less digits than its factorization.

40010394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4950 (or 4913 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 40010394 is about 6325.3769848128. The cubic root of 40010394 is about 342.0248092532.

Adding to 40010394 its reverse (49301004), we get a palindrome (89311398).

It can be divided in two parts, 40010 and 394, that added together give a palindrome (40404).

The spelling of 40010394 in words is "forty million, ten thousand, three hundred ninety-four".