70928939 has 2 divisors, whose sum is σ = 70928940. Its totient is φ = 70928938.

The previous prime is 70928933. The next prime is 70929007. The reversal of 70928939 is 93982907.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70928939 - 2²⁴ = 54151723 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 70928893 and 70928902.

It is not a weakly prime, because it can be changed into another prime (70928933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35464469 + 35464470.

It is an arithmetic number, because the mean of its divisors is an integer number (35464470).

Almost surely, 2^70928939 is an apocalyptic number.

70928939 is a deficient number, since it is larger than the sum of its proper divisors (1).

70928939 is an equidigital number, since it uses as much as digits as its factorization.

70928939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 70928939 is about 8421.9320229980. The cubic root of 70928939 is about 413.9435829834.

The spelling of 70928939 in words is "seventy million, nine hundred twenty-eight thousand, nine hundred thirty-nine".