70491943 has 2 divisors, whose sum is σ = 70491944. Its totient is φ = 70491942.

The previous prime is 70491931. The next prime is 70491947. The reversal of 70491943 is 34919407.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-70491943 is a prime.

It is a super-2 number, since 2×70491943² = 9938228055830498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70491947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35245971 + 35245972.

It is an arithmetic number, because the mean of its divisors is an integer number (35245972).

Almost surely, 2^70491943 is an apocalyptic number.

70491943 is a deficient number, since it is larger than the sum of its proper divisors (1).

70491943 is an equidigital number, since it uses as much as digits as its factorization.

70491943 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 70491943 is about 8395.9480107966. The cubic root of 70491943 is about 413.0917235357.

The spelling of 70491943 in words is "seventy million, four hundred ninety-one thousand, nine hundred forty-three".