283407421 has 4 divisors (see below), whose sum is σ = 309171744. Its totient is φ = 257643100.

The previous prime is 283407413. The next prime is 283407427. The reversal of 283407421 is 124704382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 283407421 - 2³ = 283407413 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (283407427) 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, 12882145 + ... + 12882166.

It is an arithmetic number, because the mean of its divisors is an integer number (77292936).

Almost surely, 2^283407421 is an apocalyptic number.

It is an amenable number.

283407421 is a deficient number, since it is larger than the sum of its proper divisors (25764323).

283407421 is a wasteful number, since it uses less digits than its factorization.

283407421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25764322.

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 283407421 is about 16834.7088183907. The cubic root of 283407421 is about 656.8563549964.

It can be divided in two parts, 283 and 407421, that added together give a palindrome (407704).

The spelling of 283407421 in words is "two hundred eighty-three million, four hundred seven thousand, four hundred twenty-one".