84958421 has 8 divisors (see below), whose sum is σ = 87327000. Its totient is φ = 82621440.

The previous prime is 84958409. The next prime is 84958451. The reversal of 84958421 is 12485948.

It can be written as a sum of positive squares in 4 ways, for example, as 5499025 + 79459396 = 2345^2 + 8914^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84958421 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 (84958451) 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, 2396 + ... + 13253.

It is an arithmetic number, because the mean of its divisors is an integer number (10915875).

Almost surely, 2^84958421 is an apocalyptic number.

It is an amenable number.

84958421 is a deficient number, since it is larger than the sum of its proper divisors (2368579).

84958421 is a wasteful number, since it uses less digits than its factorization.

84958421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15799.

The product of its digits is 92160, while the sum is 41.

The square root of 84958421 is about 9217.2892435900. The cubic root of 84958421 is about 439.6112630597.

The spelling of 84958421 in words is "eighty-four million, nine hundred fifty-eight thousand, four hundred twenty-one".