406121860 has 48 divisors (see below), whose sum is σ = 863513280. Its totient is φ = 160433280.

The previous prime is 406121843. The next prime is 406121861. The reversal of 406121860 is 68121604.

It is not an unprimeable number, because it can be changed into a prime (406121861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 964450 + ... + 964870.

It is an arithmetic number, because the mean of its divisors is an integer number (17989860).

Almost surely, 2^406121860 is an apocalyptic number.

It is an amenable number.

406121860 is an abundant number, since it is smaller than the sum of its proper divisors (457391420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406121860 is a wasteful number, since it uses less digits than its factorization.

406121860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916 (or 914 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 406121860 is about 20152.4653578663. The cubic root of 406121860 is about 740.5461393242.

It can be divided in two parts, 4061 and 21860, that added together give a square (25921 = 161²).

The spelling of 406121860 in words is "four hundred six million, one hundred twenty-one thousand, eight hundred sixty".