40402463 has 4 divisors (see below), whose sum is σ = 40418928. Its totient is φ = 40386000.

The previous prime is 40402459. The next prime is 40402519. The reversal of 40402463 is 36420404.

It is a happy number.

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 40402463 - 2² = 40402459 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402403) 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, 3731 + ... + 9732.

It is an arithmetic number, because the mean of its divisors is an integer number (10104732).

Almost surely, 2^40402463 is an apocalyptic number.

40402463 is a deficient number, since it is larger than the sum of its proper divisors (16465).

40402463 is a wasteful number, since it uses less digits than its factorization.

40402463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16464.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 40402463 is about 6356.2931807776. The cubic root of 40402463 is about 343.1383672241.

Adding to 40402463 its reverse (36420404), we get a palindrome (76822867).

The spelling of 40402463 in words is "forty million, four hundred two thousand, four hundred sixty-three".