79321943 has 2 divisors, whose sum is σ = 79321944. Its totient is φ = 79321942.

The previous prime is 79321939. The next prime is 79321987. The reversal of 79321943 is 34912397.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 79321943 - 2² = 79321939 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 79321897 and 79321906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79321933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39660971 + 39660972.

It is an arithmetic number, because the mean of its divisors is an integer number (39660972).

Almost surely, 2^79321943 is an apocalyptic number.

79321943 is a deficient number, since it is larger than the sum of its proper divisors (1).

79321943 is an equidigital number, since it uses as much as digits as its factorization.

79321943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824, while the sum is 38.

The square root of 79321943 is about 8906.2867122050. The cubic root of 79321943 is about 429.6661244586. Note that the first 3 decimals are identical.

The spelling of 79321943 in words is "seventy-nine million, three hundred twenty-one thousand, nine hundred forty-three".