992471421 has 8 divisors (see below), whose sum is σ = 1339238880. Its totient is φ = 653675792.

The previous prime is 992471419. The next prime is 992471449. The reversal of 992471421 is 124174299.

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 992471421 - 2¹ = 992471419 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 992471421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (992472421) 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, 1992666 + ... + 1993163.

It is an arithmetic number, because the mean of its divisors is an integer number (167404860).

Almost surely, 2^992471421 is an apocalyptic number.

It is an amenable number.

992471421 is a deficient number, since it is larger than the sum of its proper divisors (346767459).

992471421 is a wasteful number, since it uses less digits than its factorization.

992471421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3985915.

The product of its digits is 36288, while the sum is 39.

The square root of 992471421 is about 31503.5144229973. The cubic root of 992471421 is about 997.4841494708.

The spelling of 992471421 in words is "nine hundred ninety-two million, four hundred seventy-one thousand, four hundred twenty-one".