6458439421 has 8 divisors (see below), whose sum is σ = 7382073024. Its totient is φ = 5535055680.

The previous prime is 6458439371. The next prime is 6458439431. The reversal of 6458439421 is 1249348546.

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

It is not a de Polignac number, because 6458439421 - 2⁷ = 6458439293 is a prime.

It is a super-2 number, since 2×6458439421² = 83422879509453630482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6458439431) 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, 3340 + ... + 113701.

It is an arithmetic number, because the mean of its divisors is an integer number (922759128).

Almost surely, 2^6458439421 is an apocalyptic number.

It is an amenable number.

6458439421 is a deficient number, since it is larger than the sum of its proper divisors (923633603).

6458439421 is a wasteful number, since it uses less digits than its factorization.

6458439421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124931.

The product of its digits is 829440, while the sum is 46.

The square root of 6458439421 is about 80364.4163856119. The cubic root of 6458439421 is about 1862.2694982886.

The spelling of 6458439421 in words is "six billion, four hundred fifty-eight million, four hundred thirty-nine thousand, four hundred twenty-one".