406878001 has 4 divisors (see below), whose sum is σ = 406945600. Its totient is φ = 406810404.

The previous prime is 406877993. The next prime is 406878029. The reversal of 406878001 is 100878604.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 406878001 - 2³ = 406877993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406878061) 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, 23781 + ... + 37138.

It is an arithmetic number, because the mean of its divisors is an integer number (101736400).

Almost surely, 2^406878001 is an apocalyptic number.

It is an amenable number.

406878001 is a deficient number, since it is larger than the sum of its proper divisors (67599).

406878001 is an equidigital number, since it uses as much as digits as its factorization.

406878001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67598.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 406878001 is about 20171.2171422550. The cubic root of 406878001 is about 741.0054514932.

The spelling of 406878001 in words is "four hundred six million, eight hundred seventy-eight thousand, one".