421403099 has 8 divisors (see below), whose sum is σ = 456826272. Its totient is φ = 386409600.

The previous prime is 421403093. The next prime is 421403137. The reversal of 421403099 is 990304124.

It is a happy number.

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 421403099 - 2²⁰ = 420354523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (421403093) 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, 105374 + ... + 109299.

It is an arithmetic number, because the mean of its divisors is an integer number (57103284).

Almost surely, 2^421403099 is an apocalyptic number.

421403099 is a deficient number, since it is larger than the sum of its proper divisors (35423173).

421403099 is a wasteful number, since it uses less digits than its factorization.

421403099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214837.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 421403099 is about 20528.1051000817. The cubic root of 421403099 is about 749.7202506297.

The spelling of 421403099 in words is "four hundred twenty-one million, four hundred three thousand, ninety-nine".