405299863 has 4 divisors (see below), whose sum is σ = 405553680. Its totient is φ = 405046048.

The previous prime is 405299861. The next prime is 405299891. The reversal of 405299863 is 368992504.

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 405299863 - 2¹ = 405299861 is a prime.

It is a super-3 number, since 3×405299863³ (a number of 27 digits) contains 333 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 (405299861) 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, 124498 + ... + 127711.

It is an arithmetic number, because the mean of its divisors is an integer number (101388420).

Almost surely, 2^405299863 is an apocalyptic number.

405299863 is a deficient number, since it is larger than the sum of its proper divisors (253817).

405299863 is a wasteful number, since it uses less digits than its factorization.

405299863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253816.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 405299863 is about 20132.0605751125. The cubic root of 405299863 is about 740.0461762030.

The spelling of 405299863 in words is "four hundred five million, two hundred ninety-nine thousand, eight hundred sixty-three".