997059409 has 8 divisors (see below), whose sum is σ = 1049936000. Its totient is φ = 944222832.

The previous prime is 997059389. The next prime is 997059419. The reversal of 997059409 is 904950799.

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 997059409 - 2⁷ = 997059281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997059419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50632 + ... + 67510.

It is an arithmetic number, because the mean of its divisors is an integer number (131242000).

Almost surely, 2^997059409 is an apocalyptic number.

It is an amenable number.

997059409 is a deficient number, since it is larger than the sum of its proper divisors (52876591).

997059409 is a wasteful number, since it uses less digits than its factorization.

997059409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20007.

The product of its (nonzero) digits is 918540, while the sum is 52.

The square root of 997059409 is about 31576.2475446339. The cubic root of 997059409 is about 999.0188406412.

The spelling of 997059409 in words is "nine hundred ninety-seven million, fifty-nine thousand, four hundred nine".