40053644 has 12 divisors (see below), whose sum is σ = 70193424. Its totient is φ = 19998384.

The previous prime is 40053623. The next prime is 40053659. The reversal of 40053644 is 44635004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3767 + ... + 9710.

It is an arithmetic number, because the mean of its divisors is an integer number (5849452).

Almost surely, 2^40053644 is an apocalyptic number.

It is an amenable number.

40053644 is a deficient number, since it is larger than the sum of its proper divisors (30139780).

40053644 is a wasteful number, since it uses less digits than its factorization.

40053644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14224 (or 14222 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 40053644 is about 6328.7948299815. The cubic root of 40053644 is about 342.1480042918.

Adding to 40053644 its reverse (44635004), we get a palindrome (84688648).

The spelling of 40053644 in words is "forty million, fifty-three thousand, six hundred forty-four".