997700949 has 32 divisors (see below), whose sum is σ = 1747488000. Its totient is φ = 550452672.

The previous prime is 997700911. The next prime is 997700983. The reversal of 997700949 is 949007799.

It is not a de Polignac number, because 997700949 - 2¹³ = 997692757 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997700895 and 997700904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (997700999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 85534 + ... + 96495.

It is an arithmetic number, because the mean of its divisors is an integer number (54609000).

Almost surely, 2^997700949 is an apocalyptic number.

It is an amenable number.

997700949 is a deficient number, since it is larger than the sum of its proper divisors (749787051).

997700949 is a wasteful number, since it uses less digits than its factorization.

997700949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182074 (or 182068 counting only the distinct ones).

The product of its (nonzero) digits is 1285956, while the sum is 54.

The square root of 997700949 is about 31586.4044962386. The cubic root of 997700949 is about 999.2330616226.

The spelling of 997700949 in words is "nine hundred ninety-seven million, seven hundred thousand, nine hundred forty-nine".