40290463 has 2 divisors, whose sum is σ = 40290464. Its totient is φ = 40290462.

The previous prime is 40290409. The next prime is 40290473. The reversal of 40290463 is 36409204.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40290463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40290473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20145231 + 20145232.

It is an arithmetic number, because the mean of its divisors is an integer number (20145232).

Almost surely, 2^40290463 is an apocalyptic number.

40290463 is a deficient number, since it is larger than the sum of its proper divisors (1).

40290463 is an equidigital number, since it uses as much as digits as its factorization.

40290463 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 40290463 is about 6347.4769003124. The cubic root of 40290463 is about 342.8210015558.

Adding to 40290463 its reverse (36409204), we get a palindrome (76699667).

The spelling of 40290463 in words is "forty million, two hundred ninety thousand, four hundred sixty-three".