40323869 has 8 divisors (see below), whose sum is σ = 41391672. Its totient is φ = 39260160.

The previous prime is 40323863. The next prime is 40323887. The reversal of 40323869 is 96832304.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1369 + 40322500 = 37^2 + 6350^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40323869 - 2¹⁶ = 40258333 is a prime.

It is a super-2 number, since 2×40323869² = 3252028822258322, 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 (40323863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34397 + ... + 35549.

It is an arithmetic number, because the mean of its divisors is an integer number (5173959).

Almost surely, 2^40323869 is an apocalyptic number.

It is an amenable number.

40323869 is a deficient number, since it is larger than the sum of its proper divisors (1067803).

40323869 is a wasteful number, since it uses less digits than its factorization.

40323869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 40323869 is about 6350.1077943607. The cubic root of 40323869 is about 342.9157230179.

The spelling of 40323869 in words is "forty million, three hundred twenty-three thousand, eight hundred sixty-nine".