981415829 has 2 divisors, whose sum is σ = 981415830. Its totient is φ = 981415828.

The previous prime is 981415817. The next prime is 981415837. The reversal of 981415829 is 928514189.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 544522225 + 436893604 = 23335^2 + 20902^2 .

It is an emirp because it is prime and its reverse (928514189) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 981415829 - 2²⁰ = 980367253 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (981415849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490707914 + 490707915.

It is an arithmetic number, because the mean of its divisors is an integer number (490707915).

Almost surely, 2^981415829 is an apocalyptic number.

It is an amenable number.

981415829 is a deficient number, since it is larger than the sum of its proper divisors (1).

981415829 is an equidigital number, since it uses as much as digits as its factorization.

981415829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 47.

The square root of 981415829 is about 31327.5570225321. The cubic root of 981415829 is about 993.7665005554.

The spelling of 981415829 in words is "nine hundred eighty-one million, four hundred fifteen thousand, eight hundred twenty-nine".