1397403522 has 64 divisors (see below), whose sum is σ = 3178258560. Its totient is φ = 454989312.

The previous prime is 1397403517. The next prime is 1397403547. The reversal of 1397403522 is 2253047931.

1397403522 is a `hidden beast` number, since 1 + 3 + 97 + 40 + 3 + 522 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 420138 + ... + 423450.

It is an arithmetic number, because the mean of its divisors is an integer number (49660290).

Almost surely, 2^1397403522 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1397403522, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589129280).

1397403522 is an abundant number, since it is smaller than the sum of its proper divisors (1780855038).

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

1397403522 is a wasteful number, since it uses less digits than its factorization.

1397403522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3504 (or 3498 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 1397403522 is about 37381.8608686085. The cubic root of 1397403522 is about 1117.9969304716.

The spelling of 1397403522 in words is "one billion, three hundred ninety-seven million, four hundred three thousand, five hundred twenty-two".