405965299 has 4 divisors (see below), whose sum is σ = 406194264. Its totient is φ = 405736336.

The previous prime is 405965297. The next prime is 405965303. The reversal of 405965299 is 992569504.

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 405965299 - 2¹ = 405965297 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405965297) 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, 111802 + ... + 115375.

It is an arithmetic number, because the mean of its divisors is an integer number (101548566).

Almost surely, 2^405965299 is an apocalyptic number.

405965299 is a deficient number, since it is larger than the sum of its proper divisors (228965).

405965299 is a wasteful number, since it uses less digits than its factorization.

405965299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228964.

The product of its (nonzero) digits is 874800, while the sum is 49.

The square root of 405965299 is about 20148.5805703528. The cubic root of 405965299 is about 740.4509662926.

The spelling of 405965299 in words is "four hundred five million, nine hundred sixty-five thousand, two hundred ninety-nine".