40144635 has 12 divisors (see below), whose sum is σ = 69584112. Its totient is φ = 21410448.

The previous prime is 40144619. The next prime is 40144639. The reversal of 40144635 is 53644104.

It is not a de Polignac number, because 40144635 - 2⁴ = 40144619 is a prime.

It is a super-2 number, since 2×40144635² = 3223183438566450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40144599 and 40144608.

It is not an unprimeable number, because it can be changed into a prime (40144639) 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, 446007 + ... + 446096.

It is an arithmetic number, because the mean of its divisors is an integer number (5798676).

Almost surely, 2^40144635 is an apocalyptic number.

40144635 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

40144635 is a deficient number, since it is larger than the sum of its proper divisors (29439477).

40144635 is a wasteful number, since it uses less digits than its factorization.

40144635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892114 (or 892111 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 40144635 is about 6335.9794033756. The cubic root of 40144635 is about 342.4068974567.

Adding to 40144635 its reverse (53644104), we get a palindrome (93788739).

It can be divided in two parts, 4014 and 4635, that added together give a square (8649 = 93²).

The spelling of 40144635 in words is "forty million, one hundred forty-four thousand, six hundred thirty-five".