1229421488 has 20 divisors (see below), whose sum is σ = 2432686560. Its totient is φ = 601631424.

The previous prime is 1229421451. The next prime is 1229421491. The reversal of 1229421488 is 8841249221.

It is a super-2 number, since 2×1229421488² = 3022954390312268288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 816683 + ... + 818186.

It is an arithmetic number, because the mean of its divisors is an integer number (121634328).

Almost surely, 2^1229421488 is an apocalyptic number.

It is an amenable number.

1229421488 is a deficient number, since it is larger than the sum of its proper divisors (1203265072).

1229421488 is a wasteful number, since it uses less digits than its factorization.

1229421488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1634924 (or 1634918 counting only the distinct ones).

The product of its digits is 73728, while the sum is 41.

The square root of 1229421488 is about 35063.1072211235. The cubic root of 1229421488 is about 1071.2732645865.

The spelling of 1229421488 in words is "one billion, two hundred twenty-nine million, four hundred twenty-one thousand, four hundred eighty-eight".