397587767040 has 216 divisors, whose sum is σ = 1419988123008. Its totient is φ = 102603202560.

The previous prime is 397587767039. The next prime is 397587767117. The reversal of 397587767040 is 40767785793.

397587767040 is a `hidden beast` number, since 3 + 9 + 7 + 587 + 7 + 6 + 7 + 0 + 40 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199539 + ... + 913778.

It is an arithmetic number, because the mean of its divisors is an integer number (6574019088).

Almost surely, 2^397587767040 is an apocalyptic number.

397587767040 is a gapful number since it is divisible by the number (30) 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 397587767040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (709994061504).

397587767040 is an abundant number, since it is smaller than the sum of its proper divisors (1022400355968).

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

397587767040 is a wasteful number, since it uses less digits than its factorization.

397587767040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1113375 (or 1113358 counting only the distinct ones).

The product of its (nonzero) digits is 62233920, while the sum is 63.

The spelling of 397587767040 in words is "three hundred ninety-seven billion, five hundred eighty-seven million, seven hundred sixty-seven thousand, forty".