40144474 has 16 divisors (see below), whose sum is σ = 61236000. Its totient is φ = 19735504.

The previous prime is 40144471. The next prime is 40144483. The reversal of 40144474 is 47444104.

It is a happy number.

It is a super-2 number, since 2×40144474² = 3223157585473352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40144471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31257 + ... + 32515.

It is an arithmetic number, because the mean of its divisors is an integer number (3827250).

Almost surely, 2^40144474 is an apocalyptic number.

40144474 is a deficient number, since it is larger than the sum of its proper divisors (21091526).

40144474 is a wasteful number, since it uses less digits than its factorization.

40144474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1517.

The product of its (nonzero) digits is 7168, while the sum is 28.

The square root of 40144474 is about 6335.9666981448. The cubic root of 40144474 is about 342.4064397153.

Adding to 40144474 its reverse (47444104), we get a palindrome (87588578).

The spelling of 40144474 in words is "forty million, one hundred forty-four thousand, four hundred seventy-four".