40207369 has 6 divisors (see below), whose sum is σ = 41642510. Its totient is φ = 38820096.

The previous prime is 40207367. The next prime is 40207399. The reversal of 40207369 is 96370204.

It can be written as a sum of positive squares in 3 ways, for example, as 831744 + 39375625 = 912^2 + 6275^2 .

It is not a de Polignac number, because 40207369 - 2¹ = 40207367 is a prime.

It is a super-2 number, since 2×40207369² = 3233265043804322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40207369.

It is not an unprimeable number, because it can be changed into a prime (40207361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23064 + ... + 24745.

Almost surely, 2^40207369 is an apocalyptic number.

It is an amenable number.

40207369 is a deficient number, since it is larger than the sum of its proper divisors (1435141).

40207369 is an equidigital number, since it uses as much as digits as its factorization.

40207369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47867 (or 47838 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 40207369 is about 6340.9280866447. The cubic root of 40207369 is about 342.5851643226.

The spelling of 40207369 in words is "forty million, two hundred seven thousand, three hundred sixty-nine".