1396887552 has 208 divisors, whose sum is σ = 4387754880. Its totient is φ = 437649408.

The previous prime is 1396887473. The next prime is 1396887553. The reversal of 1396887552 is 2557886931.

1396887552 is a `hidden beast` number, since 1 + 3 + 9 + 6 + 8 + 87 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1396887553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1879693 + ... + 1880435.

Almost surely, 2^1396887552 is an apocalyptic number.

1396887552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1396887552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2193877440).

1396887552 is an abundant number, since it is smaller than the sum of its proper divisors (2990867328).

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

1396887552 is an equidigital number, since it uses as much as digits as its factorization.

1396887552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793 (or 765 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 1396887552 is about 37374.9588896095. The cubic root of 1396887552 is about 1117.8593124107.

The spelling of 1396887552 in words is "one billion, three hundred ninety-six million, eight hundred eighty-seven thousand, five hundred fifty-two".