40290763 has 4 divisors (see below), whose sum is σ = 40308328. Its totient is φ = 40273200.

The previous prime is 40290749. The next prime is 40290769. The reversal of 40290763 is 36709204.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40290763 is a prime.

It is a super-3 number, since 3×40290763³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40290769) 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, 4713 + ... + 10138.

It is an arithmetic number, because the mean of its divisors is an integer number (10077082).

Almost surely, 2^40290763 is an apocalyptic number.

40290763 is a deficient number, since it is larger than the sum of its proper divisors (17565).

40290763 is a wasteful number, since it uses less digits than its factorization.

40290763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17564.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 40290763 is about 6347.5005317054. The cubic root of 40290763 is about 342.8218524275.

Adding to 40290763 its reverse (36709204), we get a palindrome (76999967).

The spelling of 40290763 in words is "forty million, two hundred ninety thousand, seven hundred sixty-three".