981438434 has 8 divisors (see below), whose sum is σ = 1487334828. Its totient is φ = 485660160.

The previous prime is 981438433. The next prime is 981438449. The reversal of 981438434 is 434834189.

It can be written as a sum of positive squares in 2 ways, for example, as 843728209 + 137710225 = 29047^2 + 11735^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (981438433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2529287 + ... + 2529674.

Almost surely, 2^981438434 is an apocalyptic number.

981438434 is a deficient number, since it is larger than the sum of its proper divisors (505896394).

981438434 is a wasteful number, since it uses less digits than its factorization.

981438434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5059060.

The product of its digits is 331776, while the sum is 44.

The square root of 981438434 is about 31327.9178050505. The cubic root of 981438434 is about 993.7741303213.

The spelling of 981438434 in words is "nine hundred eighty-one million, four hundred thirty-eight thousand, four hundred thirty-four".