906141821979 has 8 divisors (see below), whose sum is σ = 1271777995840. Its totient is φ = 572300098056.

The previous prime is 906141821939. The next prime is 906141821999. The reversal of 906141821979 is 979128141609.

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

It is not a de Polignac number, because 906141821979 - 2⁸ = 906141821723 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 15897224947 = 906141821979 / (9 + 0 + 6 + 1 + 4 + 1 + 8 + 2 + 1 + 9 + 7 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (906141821939) 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, 7948612417 + ... + 7948612530.

It is an arithmetic number, because the mean of its divisors is an integer number (158972249480).

Almost surely, 2^906141821979 is an apocalyptic number.

906141821979 is a deficient number, since it is larger than the sum of its proper divisors (365636173861).

906141821979 is a wasteful number, since it uses less digits than its factorization.

906141821979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15897224969.

The product of its (nonzero) digits is 1959552, while the sum is 57.

The spelling of 906141821979 in words is "nine hundred six billion, one hundred forty-one million, eight hundred twenty-one thousand, nine hundred seventy-nine".