406294545 has 32 divisors (see below), whose sum is σ = 660667392. Its totient is φ = 213181632.

The previous prime is 406294507. The next prime is 406294547. The reversal of 406294545 is 545492604.

It is a happy number.

It is not a de Polignac number, because 406294545 - 2¹⁵ = 406261777 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (406294547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 381684 + ... + 382746.

It is an arithmetic number, because the mean of its divisors is an integer number (20645856).

Almost surely, 2^406294545 is an apocalyptic number.

It is an amenable number.

406294545 is a deficient number, since it is larger than the sum of its proper divisors (254372847).

406294545 is a wasteful number, since it uses less digits than its factorization.

406294545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1461.

The product of its (nonzero) digits is 172800, while the sum is 39.

The square root of 406294545 is about 20156.7493659072. The cubic root of 406294545 is about 740.6510857304.

The spelling of 406294545 in words is "four hundred six million, two hundred ninety-four thousand, five hundred forty-five".