405948663 has 12 divisors (see below), whose sum is σ = 587090088. Its totient is φ = 270300240.

The previous prime is 405948659. The next prime is 405948701. The reversal of 405948663 is 366849504.

It is not a de Polignac number, because 405948663 - 2² = 405948659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405941663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19828 + ... + 34713.

It is an arithmetic number, because the mean of its divisors is an integer number (48924174).

Almost surely, 2^405948663 is an apocalyptic number.

405948663 is a deficient number, since it is larger than the sum of its proper divisors (181141425).

405948663 is a wasteful number, since it uses less digits than its factorization.

405948663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55374 (or 55371 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The square root of 405948663 is about 20148.1677330719. The cubic root of 405948663 is about 740.4408518727.

The spelling of 405948663 in words is "four hundred five million, nine hundred forty-eight thousand, six hundred sixty-three".