1399468772 has 12 divisors (see below), whose sum is σ = 2637460476. Its totient is φ = 645908640.

The previous prime is 1399468699. The next prime is 1399468801. The reversal of 1399468772 is 2778649931.

It can be written as a sum of positive squares in 2 ways, for example, as 580135396 + 819333376 = 24086^2 + 28624^2 .

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, 13456379 + ... + 13456482.

It is an arithmetic number, because the mean of its divisors is an integer number (219788373).

Almost surely, 2^1399468772 is an apocalyptic number.

It is an amenable number.

1399468772 is a deficient number, since it is larger than the sum of its proper divisors (1237991704).

1399468772 is a wasteful number, since it uses less digits than its factorization.

1399468772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26912878 (or 26912876 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 56.

The square root of 1399468772 is about 37409.4743614502. The cubic root of 1399468772 is about 1118.5474292073.

The spelling of 1399468772 in words is "one billion, three hundred ninety-nine million, four hundred sixty-eight thousand, seven hundred seventy-two".