40290283 has 4 divisors (see below), whose sum is σ = 43953048. Its totient is φ = 36627520.

The previous prime is 40290281. The next prime is 40290293. The reversal of 40290283 is 38209204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40290283 - 2¹ = 40290281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40290281) 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, 1831366 + ... + 1831387.

It is an arithmetic number, because the mean of its divisors is an integer number (10988262).

Almost surely, 2^40290283 is an apocalyptic number.

40290283 is a deficient number, since it is larger than the sum of its proper divisors (3662765).

40290283 is a wasteful number, since it uses less digits than its factorization.

40290283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662764.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 40290283 is about 6347.4627214344. The cubic root of 40290283 is about 342.8204910308.

Adding to 40290283 its reverse (38209204), we get a palindrome (78499487).

The spelling of 40290283 in words is "forty million, two hundred ninety thousand, two hundred eighty-three".