969841521 has 48 divisors (see below), whose sum is σ = 1576942848. Its totient is φ = 569203200.

The previous prime is 969841487. The next prime is 969841589. The reversal of 969841521 is 125148969.

It is not a de Polignac number, because 969841521 - 2⁹ = 969841009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (969841021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 992185 + ... + 993161.

It is an arithmetic number, because the mean of its divisors is an integer number (32852976).

Almost surely, 2^969841521 is an apocalyptic number.

It is an amenable number.

969841521 is a deficient number, since it is larger than the sum of its proper divisors (607101327).

969841521 is a wasteful number, since it uses less digits than its factorization.

969841521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302 (or 1299 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 969841521 is about 31142.2786738543. The cubic root of 969841521 is about 989.8443863155.

The spelling of 969841521 in words is "nine hundred sixty-nine million, eight hundred forty-one thousand, five hundred twenty-one".