1397447352 has 48 divisors (see below), whose sum is σ = 4325433840. Its totient is φ = 399270528.

The previous prime is 1397447351. The next prime is 1397447371. The reversal of 1397447352 is 2537447931.

It is a super-2 number, since 2×1397447352² = 3905718203223623808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1397447298 and 1397447307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397447351) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1385853 + ... + 1386860.

It is an arithmetic number, because the mean of its divisors is an integer number (90113205).

Almost surely, 2^1397447352 is an apocalyptic number.

1397447352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1397447352 is an abundant number, since it is smaller than the sum of its proper divisors (2927986488).

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

1397447352 is a wasteful number, since it uses less digits than its factorization.

1397447352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2772732 (or 2772725 counting only the distinct ones).

The product of its digits is 635040, while the sum is 45.

The square root of 1397447352 is about 37382.4471109102. The cubic root of 1397447352 is about 1118.0086191243.

The spelling of 1397447352 in words is "one billion, three hundred ninety-seven million, four hundred forty-seven thousand, three hundred fifty-two".