70491229 has 2 divisors, whose sum is σ = 70491230. Its totient is φ = 70491228.

The previous prime is 70491227. The next prime is 70491247. The reversal of 70491229 is 92219407.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58171129 + 12320100 = 7627^2 + 3510^2 .

It is a cyclic number.

It is not a de Polignac number, because 70491229 - 2¹ = 70491227 is a prime.

Together with 70491227, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 70491194 and 70491203.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (70491221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35245614 + 35245615.

It is an arithmetic number, because the mean of its divisors is an integer number (35245615).

Almost surely, 2^70491229 is an apocalyptic number.

It is an amenable number.

70491229 is a deficient number, since it is larger than the sum of its proper divisors (1).

70491229 is an equidigital number, since it uses as much as digits as its factorization.

70491229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 70491229 is about 8395.9054901779. The cubic root of 70491229 is about 413.0903288208.

The spelling of 70491229 in words is "seventy million, four hundred ninety-one thousand, two hundred twenty-nine".