1399048452 has 18 divisors (see below), whose sum is σ = 3536483678. Its totient is φ = 466349472.

The previous prime is 1399048447. The next prime is 1399048459. The reversal of 1399048452 is 2548409931.

1399048452 is a `hidden beast` number, since 1 + 39 + 90 + 484 + 52 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1252735236 + 146313216 = 35394^2 + 12096^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a junction number, because it is equal to n+sod(n) for n = 1399048398 and 1399048407.

It is not an unprimeable number, because it can be changed into a prime (1399048459) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 19431193 + ... + 19431264.

Almost surely, 2^1399048452 is an apocalyptic number.

1399048452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1399048452 is an abundant number, since it is smaller than the sum of its proper divisors (2137435226).

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

1399048452 is a wasteful number, since it uses less digits than its factorization.

1399048452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38862467 (or 38862462 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 1399048452 is about 37403.8561113691. The cubic root of 1399048452 is about 1118.4354355372.

The spelling of 1399048452 in words is "one billion, three hundred ninety-nine million, forty-eight thousand, four hundred fifty-two".