40444394 has 24 divisors (see below), whose sum is σ = 64985760. Its totient is φ = 18873536.

The previous prime is 40444387. The next prime is 40444399. The reversal of 40444394 is 49344404.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 40444394.

It is not an unprimeable number, because it can be changed into a prime (40444399) 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, 96317 + ... + 96735.

It is an arithmetic number, because the mean of its divisors is an integer number (2707740).

Almost surely, 2^40444394 is an apocalyptic number.

40444394 is a deficient number, since it is larger than the sum of its proper divisors (24541366).

40444394 is a wasteful number, since it uses less digits than its factorization.

40444394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 622 (or 605 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

The square root of 40444394 is about 6359.5907101008. The cubic root of 40444394 is about 343.2570329290.

Adding to 40444394 its reverse (49344404), we get a palindrome (89788798).

The spelling of 40444394 in words is "forty million, four hundred forty-four thousand, three hundred ninety-four".