469991808 has 320 divisors, whose sum is σ = 1648397520. Its totient is φ = 131051520.

The previous prime is 469991807. The next prime is 469991833. The reversal of 469991808 is 808199964.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (469991803) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1482466 + ... + 1482782.

Almost surely, 2^469991808 is an apocalyptic number.

469991808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 469991808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (824198760).

469991808 is an abundant number, since it is smaller than the sum of its proper divisors (1178405712).

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

469991808 is a wasteful number, since it uses less digits than its factorization.

469991808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367 (or 346 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 469991808 is about 21679.2944534641. The cubic root of 469991808 is about 777.4934924997.

The spelling of 469991808 in words is "four hundred sixty-nine million, nine hundred ninety-one thousand, eight hundred eight".