403421999 has 8 divisors (see below), whose sum is σ = 411264000. Its totient is φ = 395613592.

The previous prime is 403421983. The next prime is 403422011. The reversal of 403421999 is 999124304.

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

It is a cyclic number.

It is not a de Polignac number, because 403421999 - 2⁴ = 403421983 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 (403421299) 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, 16562 + ... + 32880.

It is an arithmetic number, because the mean of its divisors is an integer number (51408000).

Almost surely, 2^403421999 is an apocalyptic number.

403421999 is a deficient number, since it is larger than the sum of its proper divisors (7842001).

403421999 is a wasteful number, since it uses less digits than its factorization.

403421999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16797.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 403421999 is about 20085.3677835383. The cubic root of 403421999 is about 738.9014616873.

The spelling of 403421999 in words is "four hundred three million, four hundred twenty-one thousand, nine hundred ninety-nine".