405880867 has 12 divisors (see below), whose sum is σ = 472560096. Its totient is φ = 347593680.

The previous prime is 405880859. The next prime is 405880927. The reversal of 405880867 is 768088504.

It is not a de Polignac number, because 405880867 - 2³ = 405880859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405880817) 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, 66817 + ... + 72637.

It is an arithmetic number, because the mean of its divisors is an integer number (39380008).

Almost surely, 2^405880867 is an apocalyptic number.

405880867 is a deficient number, since it is larger than the sum of its proper divisors (66679229).

405880867 is a wasteful number, since it uses less digits than its factorization.

405880867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7258 (or 7251 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 46.

The square root of 405880867 is about 20146.4852269571. The cubic root of 405880867 is about 740.3996301392.

The spelling of 405880867 in words is "four hundred five million, eight hundred eighty thousand, eight hundred sixty-seven".