406838427 has 4 divisors (see below), whose sum is σ = 542451240. Its totient is φ = 271225616.

The previous prime is 406838401. The next prime is 406838459. The reversal of 406838427 is 724838604.

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 406838427 - 2¹⁴ = 406822043 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406838027) 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, 67806402 + ... + 67806407.

It is an arithmetic number, because the mean of its divisors is an integer number (135612810).

Almost surely, 2^406838427 is an apocalyptic number.

406838427 is a deficient number, since it is larger than the sum of its proper divisors (135612813).

406838427 is a wasteful number, since it uses less digits than its factorization.

406838427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135612812.

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 406838427 is about 20170.2361661930. The cubic root of 406838427 is about 740.9814266827.

The spelling of 406838427 in words is "four hundred six million, eight hundred thirty-eight thousand, four hundred twenty-seven".