4358999421 has 32 divisors (see below), whose sum is σ = 7384903680. Its totient is φ = 2489308848.

The previous prime is 4358999413. The next prime is 4358999429. The reversal of 4358999421 is 1249998534.

4358999421 is a `hidden beast` number, since 435 + 89 + 99 + 42 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (4358999413) and next prime (4358999429).

It is not a de Polignac number, because 4358999421 - 2³ = 4358999413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4358999429) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 342840 + ... + 355326.

It is an arithmetic number, because the mean of its divisors is an integer number (230778240).

Almost surely, 2^4358999421 is an apocalyptic number.

It is an amenable number.

4358999421 is a deficient number, since it is larger than the sum of its proper divisors (3025904259).

4358999421 is a wasteful number, since it uses less digits than its factorization.

4358999421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14350 (or 14344 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The square root of 4358999421 is about 66022.7189761222. The cubic root of 4358999421 is about 1633.5368544902.

The spelling of 4358999421 in words is "four billion, three hundred fifty-eight million, nine hundred ninety-nine thousand, four hundred twenty-one".