872434379 has 2 divisors, whose sum is σ = 872434380. Its totient is φ = 872434378.

The previous prime is 872434349. The next prime is 872434391. The reversal of 872434379 is 973434278.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 872434379 - 2¹² = 872430283 is a prime.

It is a super-2 number, since 2×872434379² = 1522283491322231282, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (872434309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436217189 + 436217190.

It is an arithmetic number, because the mean of its divisors is an integer number (436217190).

Almost surely, 2^872434379 is an apocalyptic number.

872434379 is a deficient number, since it is larger than the sum of its proper divisors (1).

872434379 is an equidigital number, since it uses as much as digits as its factorization.

872434379 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1016064, while the sum is 47.

The square root of 872434379 is about 29537.0001692792. Note that the first 3 decimals coincide. The cubic root of 872434379 is about 955.5298464184.

The spelling of 872434379 in words is "eight hundred seventy-two million, four hundred thirty-four thousand, three hundred seventy-nine".