40920394 has 16 divisors (see below), whose sum is σ = 66096000. Its totient is φ = 18929344.

The previous prime is 40920367. The next prime is 40920437. The reversal of 40920394 is 49302904.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8194 + ... + 12205.

It is an arithmetic number, because the mean of its divisors is an integer number (4131000).

Almost surely, 2^40920394 is an apocalyptic number.

40920394 is a deficient number, since it is larger than the sum of its proper divisors (25175606).

40920394 is a wasteful number, since it uses less digits than its factorization.

40920394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20477.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 40920394 is about 6396.9050329046. The cubic root of 40920394 is about 344.5984097049.

It can be divided in two parts, 40920 and 394, that added together give a palindrome (41314).

The spelling of 40920394 in words is "forty million, nine hundred twenty thousand, three hundred ninety-four".