981059649 has 8 divisors (see below), whose sum is σ = 1321565280. Its totient is φ = 647296896.

The previous prime is 981059621. The next prime is 981059659. The reversal of 981059649 is 946950189.

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

It is not a de Polignac number, because 981059649 - 2¹² = 981055553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (981059609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685379 + ... + 1685960.

It is an arithmetic number, because the mean of its divisors is an integer number (165195660).

Almost surely, 2^981059649 is an apocalyptic number.

It is an amenable number.

981059649 is a deficient number, since it is larger than the sum of its proper divisors (340505631).

981059649 is a wasteful number, since it uses less digits than its factorization.

981059649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3371439.

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 981059649 is about 31321.8717352587. The cubic root of 981059649 is about 993.6462652210.

The spelling of 981059649 in words is "nine hundred eighty-one million, fifty-nine thousand, six hundred forty-nine".