8429477961 has 16 divisors (see below), whose sum is σ = 11330706816. Its totient is φ = 5574135936.

The previous prime is 8429477951. The next prime is 8429477963. The reversal of 8429477961 is 1697749248.

It is a happy number.

It is not a de Polignac number, because 8429477961 - 2⁹ = 8429477449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8429477963) 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, 160911 + ... + 206763.

It is an arithmetic number, because the mean of its divisors is an integer number (708169176).

Almost surely, 2^8429477961 is an apocalyptic number.

It is an amenable number.

8429477961 is a deficient number, since it is larger than the sum of its proper divisors (2901228855).

8429477961 is a wasteful number, since it uses less digits than its factorization.

8429477961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46352.

The product of its digits is 6096384, while the sum is 57.

The square root of 8429477961 is about 91812.1885209148. The cubic root of 8429477961 is about 2035.1678178205.

The spelling of 8429477961 in words is "eight billion, four hundred twenty-nine million, four hundred seventy-seven thousand, nine hundred sixty-one".