408895481 has 4 divisors (see below), whose sum is σ = 410486772. Its totient is φ = 407304192.

The previous prime is 408895463. The next prime is 408895493. The reversal of 408895481 is 184598804.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 359671225 + 49224256 = 18965^2 + 7016^2 .

It is a cyclic number.

It is not a de Polignac number, because 408895481 - 2²⁶ = 341786617 is a prime.

It is a super-2 number, since 2×408895481² = 334391028764442722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (408891481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795260 + ... + 795773.

It is an arithmetic number, because the mean of its divisors is an integer number (102621693).

Almost surely, 2^408895481 is an apocalyptic number.

It is an amenable number.

408895481 is a deficient number, since it is larger than the sum of its proper divisors (1591291).

408895481 is a wasteful number, since it uses less digits than its factorization.

408895481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1591290.

The product of its (nonzero) digits is 368640, while the sum is 47.

The square root of 408895481 is about 20221.1641850809. The cubic root of 408895481 is about 742.2281763747.

The spelling of 408895481 in words is "four hundred eight million, eight hundred ninety-five thousand, four hundred eighty-one".