981270079 has 2 divisors, whose sum is σ = 981270080. Its totient is φ = 981270078.

The previous prime is 981270077. The next prime is 981270109. The reversal of 981270079 is 970072189.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 981270079 - 2¹ = 981270077 is a prime.

Together with 981270077, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981270077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490635039 + 490635040.

It is an arithmetic number, because the mean of its divisors is an integer number (490635040).

Almost surely, 2^981270079 is an apocalyptic number.

981270079 is a deficient number, since it is larger than the sum of its proper divisors (1).

981270079 is an equidigital number, since it uses as much as digits as its factorization.

981270079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 43.

The square root of 981270079 is about 31325.2307094457. The cubic root of 981270079 is about 993.7173033874.

The spelling of 981270079 in words is "nine hundred eighty-one million, two hundred seventy thousand, seventy-nine".