40383869 has 2 divisors, whose sum is σ = 40383870. Its totient is φ = 40383868.

The previous prime is 40383859. The next prime is 40383881. The reversal of 40383869 is 96838304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22448644 + 17935225 = 4738^2 + 4235^2 .

It is a cyclic number.

It is not a de Polignac number, because 40383869 - 2⁴ = 40383853 is a prime.

It is a super-2 number, since 2×40383869² = 3261713750818322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40383829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20191934 + 20191935.

It is an arithmetic number, because the mean of its divisors is an integer number (20191935).

Almost surely, 2^40383869 is an apocalyptic number.

It is an amenable number.

40383869 is a deficient number, since it is larger than the sum of its proper divisors (1).

40383869 is an equidigital number, since it uses as much as digits as its factorization.

40383869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 40383869 is about 6354.8303675236. The cubic root of 40383869 is about 343.0857194946.

The spelling of 40383869 in words is "forty million, three hundred eighty-three thousand, eight hundred sixty-nine".