408303381 has 8 divisors (see below), whose sum is σ = 551862400. Its totient is φ = 268473312.

The previous prime is 408303377. The next prime is 408303403. The reversal of 408303381 is 183303804.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 408303381 - 2² = 408303377 is a prime.

It is a super-2 number, since 2×408303381² = 333423301872062322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (408303341) 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, 931981 + ... + 932418.

It is an arithmetic number, because the mean of its divisors is an integer number (68982800).

Almost surely, 2^408303381 is an apocalyptic number.

It is an amenable number.

408303381 is a deficient number, since it is larger than the sum of its proper divisors (143559019).

408303381 is a wasteful number, since it uses less digits than its factorization.

408303381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864475.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 408303381 is about 20206.5182800006. The cubic root of 408303381 is about 741.8697428054.

The spelling of 408303381 in words is "four hundred eight million, three hundred three thousand, three hundred eighty-one".