40453863 has 16 divisors (see below), whose sum is σ = 57968640. Its totient is φ = 25001856.

The previous prime is 40453859. The next prime is 40453873. The reversal of 40453863 is 36835404.

It is not a de Polignac number, because 40453863 - 2² = 40453859 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40453823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2503 + ... + 9336.

It is an arithmetic number, because the mean of its divisors is an integer number (3623040).

Almost surely, 2^40453863 is an apocalyptic number.

40453863 is a deficient number, since it is larger than the sum of its proper divisors (17514777).

40453863 is a wasteful number, since it uses less digits than its factorization.

40453863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11926.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 40453863 is about 6360.3351326797. The cubic root of 40453863 is about 343.2838190658.

The spelling of 40453863 in words is "forty million, four hundred fifty-three thousand, eight hundred sixty-three".