873949381 has 2 divisors, whose sum is σ = 873949382. Its totient is φ = 873949380.

The previous prime is 873949369. The next prime is 873949393. The reversal of 873949381 is 183949378.

It is a balanced prime because it is at equal distance from previous prime (873949369) and next prime (873949393).

It can be written as a sum of positive squares in only one way, i.e., 864889281 + 9060100 = 29409^2 + 3010^2 .

It is a cyclic number.

It is not a de Polignac number, because 873949381 - 2¹⁵ = 873916613 is a prime.

It is a super-2 number, since 2×873949381² = 1527575041100566322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (873949981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436974690 + 436974691.

It is an arithmetic number, because the mean of its divisors is an integer number (436974691).

Almost surely, 2^873949381 is an apocalyptic number.

It is an amenable number.

873949381 is a deficient number, since it is larger than the sum of its proper divisors (1).

873949381 is an equidigital number, since it uses as much as digits as its factorization.

873949381 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 873949381 is about 29562.6348791849. The cubic root of 873949381 is about 956.0826262887.

The spelling of 873949381 in words is "eight hundred seventy-three million, nine hundred forty-nine thousand, three hundred eighty-one".