40032669 has 4 divisors (see below), whose sum is σ = 53376896. Its totient is φ = 26688444.

The previous prime is 40032661. The next prime is 40032691. The reversal of 40032669 is 96623004.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 40032669 - 2³ = 40032661 is a prime.

It is a super-2 number, since 2×40032669² = 3205229174527122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40032661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6672109 + ... + 6672114.

It is an arithmetic number, because the mean of its divisors is an integer number (13344224).

Almost surely, 2^40032669 is an apocalyptic number.

It is an amenable number.

40032669 is a deficient number, since it is larger than the sum of its proper divisors (13344227).

40032669 is a wasteful number, since it uses less digits than its factorization.

40032669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13344226.

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 40032669 is about 6327.1375044328. The cubic root of 40032669 is about 342.0882693400.

The spelling of 40032669 in words is "forty million, thirty-two thousand, six hundred sixty-nine".