981434369 has 8 divisors (see below), whose sum is σ = 989932800. Its totient is φ = 972972000.

The previous prime is 981434353. The next prime is 981434371. The reversal of 981434369 is 963434189.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 981434369 - 2⁴ = 981434353 is a prime.

It is a super-2 number, since 2×981434369² = 1926426841308856322, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (981434869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47144 + ... + 64694.

It is an arithmetic number, because the mean of its divisors is an integer number (123741600).

It is a Proth number, since it is equal to 29951 ⋅ 2¹⁵ + 1 and 29951 < 2¹⁵.

Almost surely, 2^981434369 is an apocalyptic number.

It is an amenable number.

981434369 is a deficient number, since it is larger than the sum of its proper divisors (8498431).

981434369 is a wasteful number, since it uses less digits than its factorization.

981434369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18031.

The product of its digits is 559872, while the sum is 47.

The square root of 981434369 is about 31327.8529267487. The cubic root of 981434369 is about 993.7727582884.

The spelling of 981434369 in words is "nine hundred eighty-one million, four hundred thirty-four thousand, three hundred sixty-nine".