805415454 has 64 divisors (see below), whose sum is σ = 1831092480. Its totient is φ = 262323360.

The previous prime is 805415447. The next prime is 805415473. The reversal of 805415454 is 454514508.

It is a happy number.

It is a super-2 number, since 2×805415454² = 1297388107084052232, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 992709 + ... + 993519.

It is an arithmetic number, because the mean of its divisors is an integer number (28610820).

Almost surely, 2^805415454 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 805415454, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915546240).

805415454 is an abundant number, since it is smaller than the sum of its proper divisors (1025677026).

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

805415454 is a wasteful number, since it uses less digits than its factorization.

805415454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222 (or 1216 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

The square root of 805415454 is about 28379.8423885687. The cubic root of 805415454 is about 930.4077504396.

The spelling of 805415454 in words is "eight hundred five million, four hundred fifteen thousand, four hundred fifty-four".