406328091 has 16 divisors (see below), whose sum is σ = 614154240. Its totient is φ = 236887200.

The previous prime is 406328059. The next prime is 406328093. The reversal of 406328091 is 190823604.

It is not a de Polignac number, because 406328091 - 2⁵ = 406328059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406328093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273435 + ... + 274916.

It is an arithmetic number, because the mean of its divisors is an integer number (38384640).

Almost surely, 2^406328091 is an apocalyptic number.

406328091 is a deficient number, since it is larger than the sum of its proper divisors (207826149).

406328091 is a wasteful number, since it uses less digits than its factorization.

406328091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 548386.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 406328091 is about 20157.5814769530. The cubic root of 406328091 is about 740.6714692985.

The spelling of 406328091 in words is "four hundred six million, three hundred twenty-eight thousand, ninety-one".