421963399 has 8 divisors (see below), whose sum is σ = 495733392. Its totient is φ = 354095040.

The previous prime is 421963393. The next prime is 421963439. The reversal of 421963399 is 993369124.

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

It is not a de Polignac number, because 421963399 - 2³ = 421963391 is a prime.

It is a super-2 number, since 2×421963399² = 356106220191266402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421963391) 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, 1475254 + ... + 1475539.

It is an arithmetic number, because the mean of its divisors is an integer number (61966674).

Almost surely, 2^421963399 is an apocalyptic number.

421963399 is a deficient number, since it is larger than the sum of its proper divisors (73769993).

421963399 is a wasteful number, since it uses less digits than its factorization.

421963399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2950817.

The product of its digits is 314928, while the sum is 46.

The square root of 421963399 is about 20541.7477104554. The cubic root of 421963399 is about 750.0523809342.

The spelling of 421963399 in words is "four hundred twenty-one million, nine hundred sixty-three thousand, three hundred ninety-nine".