1213229954 has 4 divisors (see below), whose sum is σ = 1819844934. Its totient is φ = 606614976.

The previous prime is 1213229891. The next prime is 1213229957. The reversal of 1213229954 is 4599223121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1005207025 + 208022929 = 31705^2 + 14423^2 .

It is not an unprimeable number, because it can be changed into a prime (1213229957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303307487 + ... + 303307490.

Almost surely, 2^1213229954 is an apocalyptic number.

1213229954 is a deficient number, since it is larger than the sum of its proper divisors (606614980).

1213229954 is an equidigital number, since it uses as much as digits as its factorization.

1213229954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606614979.

The product of its digits is 38880, while the sum is 38.

The square root of 1213229954 is about 34831.4506444966. The cubic root of 1213229954 is about 1066.5495613410.

The spelling of 1213229954 in words is "one billion, two hundred thirteen million, two hundred twenty-nine thousand, nine hundred fifty-four".