406403145 has 12 divisors (see below), whose sum is σ = 704432196. Its totient is φ = 216748320.

The previous prime is 406403143. The next prime is 406403147. The reversal of 406403145 is 541304604.

406403145 is a `hidden beast` number, since 4 + 0 + 640 + 3 + 14 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (406403143) and next prime (406403147).

It can be written as a sum of positive squares in 2 ways, for example, as 321413184 + 84989961 = 17928^2 + 9219^2 .

It is not a de Polignac number, because 406403145 - 2¹ = 406403143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (406403143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4515546 + ... + 4515635.

It is an arithmetic number, because the mean of its divisors is an integer number (58702683).

Almost surely, 2^406403145 is an apocalyptic number.

406403145 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

406403145 is a deficient number, since it is larger than the sum of its proper divisors (298029051).

406403145 is a wasteful number, since it uses less digits than its factorization.

406403145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9031192 (or 9031189 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 406403145 is about 20159.4430726645. The cubic root of 406403145 is about 740.7170703249.

Adding to 406403145 its reverse (541304604), we get a palindrome (947707749).

The spelling of 406403145 in words is "four hundred six million, four hundred three thousand, one hundred forty-five".