406236851 has 4 divisors (see below), whose sum is σ = 410801400. Its totient is φ = 401672304.

The previous prime is 406236821. The next prime is 406236863. The reversal of 406236851 is 158632604.

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 406236851 - 2¹⁴ = 406220467 is a prime.

It is a super-2 number, since 2×406236851² = 330056758220792402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (406236821) 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, 2282141 + ... + 2282318.

It is an arithmetic number, because the mean of its divisors is an integer number (102700350).

Almost surely, 2^406236851 is an apocalyptic number.

406236851 is a deficient number, since it is larger than the sum of its proper divisors (4564549).

406236851 is an equidigital number, since it uses as much as digits as its factorization.

406236851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4564548.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 406236851 is about 20155.3181815619. The cubic root of 406236851 is about 740.6160264801.

It can be divided in two parts, 40623 and 6851, that added together give a palindrome (47474).

The spelling of 406236851 in words is "four hundred six million, two hundred thirty-six thousand, eight hundred fifty-one".