40400294 has 16 divisors (see below), whose sum is σ = 66208320. Its totient is φ = 18336360.

The previous prime is 40400291. The next prime is 40400299. The reversal of 40400294 is 49200404.

It is a happy number.

40400294 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40400291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24797 + ... + 26375.

It is an arithmetic number, because the mean of its divisors is an integer number (4138020).

Almost surely, 2^40400294 is an apocalyptic number.

40400294 is a deficient number, since it is larger than the sum of its proper divisors (25808026).

40400294 is a wasteful number, since it uses less digits than its factorization.

40400294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 40400294 is about 6356.1225601777. The cubic root of 40400294 is about 343.1322266708.

Adding to 40400294 its reverse (49200404), we get a palindrome (89600698).

The spelling of 40400294 in words is "forty million, four hundred thousand, two hundred ninety-four".