997446305407 has 8 divisors (see below), whose sum is σ = 1000919453600. Its totient is φ = 993978203904.

The previous prime is 997446305311. The next prime is 997446305419. The reversal of 997446305407 is 704503644799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 997446305407 - 2¹⁹ = 997445781119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997446305447) 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, 865482 + ... + 1656487.

It is an arithmetic number, because the mean of its divisors is an integer number (125114931700).

Almost surely, 2^997446305407 is an apocalyptic number.

997446305407 is a deficient number, since it is larger than the sum of its proper divisors (3473148193).

997446305407 is a wasteful number, since it uses less digits than its factorization.

997446305407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2523345.

The product of its (nonzero) digits is 22861440, while the sum is 58.

The spelling of 997446305407 in words is "nine hundred ninety-seven billion, four hundred forty-six million, three hundred five thousand, four hundred seven".