1284393964 has 12 divisors (see below), whose sum is σ = 2568787984. Its totient is φ = 550454544.

The previous prime is 1284393949. The next prime is 1284393983. The reversal of 1284393964 is 4693934821.

1284393964 is an admirable number.

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, 22935579 + ... + 22935634.

Almost surely, 2^1284393964 is an apocalyptic number.

1284393964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1284393964 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1284393964 is a wasteful number, since it uses less digits than its factorization.

1284393964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45871224 (or 45871222 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 49.

The square root of 1284393964 is about 35838.4425442848. The cubic root of 1284393964 is about 1087.0080290951.

The spelling of 1284393964 in words is "one billion, two hundred eighty-four million, three hundred ninety-three thousand, nine hundred sixty-four".