997098849 has 16 divisors (see below), whose sum is σ = 1524835840. Its totient is φ = 643289040.

The previous prime is 997098833. The next prime is 997098859. The reversal of 997098849 is 948890799.

It is not a de Polignac number, because 997098849 - 2⁴ = 997098833 is a prime.

It is a super-2 number, since 2×997098849² = 1988412229354249602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (997098859) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 594802 + ... + 596475.

It is an arithmetic number, because the mean of its divisors is an integer number (95302240).

Almost surely, 2^997098849 is an apocalyptic number.

It is an amenable number.

997098849 is a deficient number, since it is larger than the sum of its proper divisors (527736991).

997098849 is a wasteful number, since it uses less digits than its factorization.

997098849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191317 (or 1191311 counting only the distinct ones).

The product of its (nonzero) digits is 11757312, while the sum is 63.

The square root of 997098849 is about 31576.8720585178. The cubic root of 997098849 is about 999.0320129701.

The spelling of 997098849 in words is "nine hundred ninety-seven million, ninety-eight thousand, eight hundred forty-nine".