1229480961 has 4 divisors (see below), whose sum is σ = 1639307952. Its totient is φ = 819653972.

The previous prime is 1229480929. The next prime is 1229480963. The reversal of 1229480961 is 1690849221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1229480961 - 2⁵ = 1229480929 is a prime.

It is a super-2 number, since 2×1229480961² = 3023246866922967042, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1229480963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204913491 + ... + 204913496.

It is an arithmetic number, because the mean of its divisors is an integer number (409826988).

Almost surely, 2^1229480961 is an apocalyptic number.

It is an amenable number.

1229480961 is a deficient number, since it is larger than the sum of its proper divisors (409826991).

1229480961 is an equidigital number, since it uses as much as digits as its factorization.

1229480961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409826990.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 1229480961 is about 35063.9552960016. The cubic root of 1229480961 is about 1071.2905385125.

The spelling of 1229480961 in words is "one billion, two hundred twenty-nine million, four hundred eighty thousand, nine hundred sixty-one".