984379831 has 2 divisors, whose sum is σ = 984379832. Its totient is φ = 984379830.

The previous prime is 984379819. The next prime is 984379867. The reversal of 984379831 is 138973489.

It is a weak prime.

It is an emirp because it is prime and its reverse (138973489) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-984379831 is a prime.

It is a super-2 number, since 2×984379831² = 1938007303359177122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (984379801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492189915 + 492189916.

It is an arithmetic number, because the mean of its divisors is an integer number (492189916).

Almost surely, 2^984379831 is an apocalyptic number.

984379831 is a deficient number, since it is larger than the sum of its proper divisors (1).

984379831 is an equidigital number, since it uses as much as digits as its factorization.

984379831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 52.

The square root of 984379831 is about 31374.8279835922. The cubic root of 984379831 is about 994.7659293006.

The spelling of 984379831 in words is "nine hundred eighty-four million, three hundred seventy-nine thousand, eight hundred thirty-one".