78270943 has 2 divisors, whose sum is σ = 78270944. Its totient is φ = 78270942.

The previous prime is 78270917. The next prime is 78270953. The reversal of 78270943 is 34907287.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 78270943 - 2⁵ = 78270911 is a prime.

It is a super-2 number, since 2×78270943² = 12252681036218498, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78270896 and 78270905.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78270953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39135471 + 39135472.

It is an arithmetic number, because the mean of its divisors is an integer number (39135472).

Almost surely, 2^78270943 is an apocalyptic number.

78270943 is a deficient number, since it is larger than the sum of its proper divisors (1).

78270943 is an equidigital number, since it uses as much as digits as its factorization.

78270943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 78270943 is about 8847.0866956304. The cubic root of 78270943 is about 427.7600173707.

The spelling of 78270943 in words is "seventy-eight million, two hundred seventy thousand, nine hundred forty-three".