91070459 has 2 divisors, whose sum is σ = 91070460. Its totient is φ = 91070458.

The previous prime is 91070423. The next prime is 91070521. The reversal of 91070459 is 95407019.

It is a weak prime.

It is an emirp because it is prime and its reverse (95407019) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91070459 - 2¹² = 91066363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91070359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45535229 + 45535230.

It is an arithmetic number, because the mean of its divisors is an integer number (45535230).

Almost surely, 2^91070459 is an apocalyptic number.

91070459 is a deficient number, since it is larger than the sum of its proper divisors (1).

91070459 is an equidigital number, since it uses as much as digits as its factorization.

91070459 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 91070459 is about 9543.0843546518. The cubic root of 91070459 is about 449.9102026583.

The spelling of 91070459 in words is "ninety-one million, seventy thousand, four hundred fifty-nine".