1398787932 has 24 divisors (see below), whose sum is σ = 3266563216. Its totient is φ = 465873408.

The previous prime is 1398787919. The next prime is 1398787937. The reversal of 1398787932 is 2397878931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1398787937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33493 + ... + 62604.

Almost surely, 2^1398787932 is an apocalyptic number.

1398787932 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1398787932 is an abundant number, since it is smaller than the sum of its proper divisors (1867775284).

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

1398787932 is a wasteful number, since it uses less digits than its factorization.

1398787932 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97317 (or 97315 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 57.

The square root of 1398787932 is about 37400.3734205957. The cubic root of 1398787932 is about 1118.3660090907.

Subtracting 1398787932 from its reverse (2397878931), we obtain a palindrome (999090999).

The spelling of 1398787932 in words is "one billion, three hundred ninety-eight million, seven hundred eighty-seven thousand, nine hundred thirty-two".