40306463 has 4 divisors (see below), whose sum is σ = 40908120. Its totient is φ = 39704808.

The previous prime is 40306459. The next prime is 40306471. The reversal of 40306463 is 36460304.

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 40306463 - 2² = 40306459 is a prime.

It is a super-2 number, since 2×40306463² = 3249221919140738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40306423) 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, 300728 + ... + 300861.

It is an arithmetic number, because the mean of its divisors is an integer number (10227030).

Almost surely, 2^40306463 is an apocalyptic number.

40306463 is a deficient number, since it is larger than the sum of its proper divisors (601657).

40306463 is an equidigital number, since it uses as much as digits as its factorization.

40306463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 601656.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 40306463 is about 6348.7371185142. The cubic root of 40306463 is about 342.8663754872.

Adding to 40306463 its reverse (36460304), we get a palindrome (76766767).

The spelling of 40306463 in words is "forty million, three hundred six thousand, four hundred sixty-three".