40253669 has 4 divisors (see below), whose sum is σ = 41341644. Its totient is φ = 39165696.

The previous prime is 40253627. The next prime is 40253687. The reversal of 40253669 is 96635204.

40253669 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37149025 + 3104644 = 6095^2 + 1762^2 .

It is a cyclic number.

It is not a de Polignac number, because 40253669 - 2¹⁶ = 40188133 is a prime.

It is a super-2 number, since 2×40253669² = 3240715735923122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40250669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543932 + ... + 544005.

It is an arithmetic number, because the mean of its divisors is an integer number (10335411).

Almost surely, 2^40253669 is an apocalyptic number.

It is an amenable number.

40253669 is a deficient number, since it is larger than the sum of its proper divisors (1087975).

40253669 is a wasteful number, since it uses less digits than its factorization.

40253669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087974.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 40253669 is about 6344.5779213435. The cubic root of 40253669 is about 342.7166129351.

The spelling of 40253669 in words is "forty million, two hundred fifty-three thousand, six hundred sixty-nine".