803639421 has 16 divisors (see below), whose sum is σ = 1282160320. Its totient is φ = 494547120.

The previous prime is 803639399. The next prime is 803639423. The reversal of 803639421 is 124936308.

It is not a de Polignac number, because 803639421 - 2⁷ = 803639293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (803639423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1144435 + ... + 1145136.

It is an arithmetic number, because the mean of its divisors is an integer number (80135020).

Almost surely, 2^803639421 is an apocalyptic number.

It is an amenable number.

803639421 is a deficient number, since it is larger than the sum of its proper divisors (478520899).

803639421 is a wasteful number, since it uses less digits than its factorization.

803639421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289593 (or 2289587 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 803639421 is about 28348.5347240382. The cubic root of 803639421 is about 929.7233620482.

The spelling of 803639421 in words is "eight hundred three million, six hundred thirty-nine thousand, four hundred twenty-one".