1283945404 has 24 divisors (see below), whose sum is σ = 2568676320. Its totient is φ = 550094016.

The previous prime is 1283945371. The next prime is 1283945407. The reversal of 1283945404 is 4045493821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1283945407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 140874 + ... + 149710.

It is an arithmetic number, because the mean of its divisors is an integer number (107028180).

Almost surely, 2^1283945404 is an apocalyptic number.

1283945404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1283945404 is an abundant number, since it is smaller than the sum of its proper divisors (1284730916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1283945404 is a wasteful number, since it uses less digits than its factorization.

1283945404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14037 (or 14035 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 1283945404 is about 35832.1839133481. The cubic root of 1283945404 is about 1086.8814726263.

The spelling of 1283945404 in words is "one billion, two hundred eighty-three million, nine hundred forty-five thousand, four hundred four".