408694146 has 16 divisors (see below), whose sum is σ = 934158144. Its totient is φ = 116769744.

The previous prime is 408694103. The next prime is 408694147. The reversal of 408694146 is 641496804.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 9730813 = 408694146 / (4 + 0 + 8 + 6 + 9 + 4 + 1 + 4 + 6).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 408694098 and 408694107.

It is not an unprimeable number, because it can be changed into a prime (408694147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4865365 + ... + 4865448.

It is an arithmetic number, because the mean of its divisors is an integer number (58384884).

Almost surely, 2^408694146 is an apocalyptic number.

408694146 is an abundant number, since it is smaller than the sum of its proper divisors (525463998).

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

408694146 is a wasteful number, since it uses less digits than its factorization.

408694146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9730825.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 408694146 is about 20216.1852484587. The cubic root of 408694146 is about 742.1063350970.

The spelling of 408694146 in words is "four hundred eight million, six hundred ninety-four thousand, one hundred forty-six".