1290229923 has 32 divisors (see below), whose sum is σ = 1839686400. Its totient is φ = 802763136.

The previous prime is 1290229867. The next prime is 1290229949. The reversal of 1290229923 is 3299220921.

1290229923 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1290229923 - 2¹⁴ = 1290213539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1290229973) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 523468 + ... + 525926.

It is an arithmetic number, because the mean of its divisors is an integer number (57490200).

Almost surely, 2^1290229923 is an apocalyptic number.

1290229923 is a deficient number, since it is larger than the sum of its proper divisors (549456477).

1290229923 is a wasteful number, since it uses less digits than its factorization.

1290229923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2691.

The product of its (nonzero) digits is 34992, while the sum is 39.

The square root of 1290229923 is about 35919.7706423635. The cubic root of 1290229923 is about 1088.6519043505.

The spelling of 1290229923 in words is "one billion, two hundred ninety million, two hundred twenty-nine thousand, nine hundred twenty-three".