981029489 has 16 divisors (see below), whose sum is σ = 1192812480. Its totient is φ = 795202560.

The previous prime is 981029473. The next prime is 981029513. The reversal of 981029489 is 984920189.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 981029489 - 2⁴ = 981029473 is a prime.

It is a super-2 number, since 2×981029489² = 1924837716575202242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (981025489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 134504 + ... + 141609.

It is an arithmetic number, because the mean of its divisors is an integer number (74550780).

Almost surely, 2^981029489 is an apocalyptic number.

It is an amenable number.

981029489 is a deficient number, since it is larger than the sum of its proper divisors (211782991).

981029489 is a wasteful number, since it uses less digits than its factorization.

981029489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276160.

The product of its (nonzero) digits is 373248, while the sum is 50.

The square root of 981029489 is about 31321.3902788494. The cubic root of 981029489 is about 993.6360828029.

The spelling of 981029489 in words is "nine hundred eighty-one million, twenty-nine thousand, four hundred eighty-nine".