40090943 has 8 divisors (see below), whose sum is σ = 41741328. Its totient is φ = 38470464.

The previous prime is 40090937. The next prime is 40090987. The reversal of 40090943 is 34909004.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40090943 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40090903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4721 + ... + 10122.

It is an arithmetic number, because the mean of its divisors is an integer number (5217666).

Almost surely, 2^40090943 is an apocalyptic number.

40090943 is a deficient number, since it is larger than the sum of its proper divisors (1650385).

40090943 is a wasteful number, since it uses less digits than its factorization.

40090943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14953.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 40090943 is about 6331.7409138404. The cubic root of 40090943 is about 342.2541770626.

Adding to 40090943 its reverse (34909004), we get a palindrome (74999947).

The spelling of 40090943 in words is "forty million, ninety thousand, nine hundred forty-three".