1997464249 has 27 divisors (see below), whose sum is σ = 2342106991. Its totient is φ = 1701909440.

The previous prime is 1997464237. The next prime is 1997464303. The reversal of 1997464249 is 9424647991.

The square root of 1997464249 is 44693.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1555119225 + 442345024 = 39435^2 + 21032^2 .

It is not a de Polignac number, because 1997464249 - 2¹⁹ = 1996939961 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1997464249.

It is not an unprimeable number, because it can be changed into a prime (1997464219) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 8357472 + ... + 8357710.

Almost surely, 2^1997464249 is an apocalyptic number.

1997464249 is the 44693-rd square number.

1997464249 is the 22347-th centered octagonal number.

It is an amenable number.

1997464249 is a deficient number, since it is larger than the sum of its proper divisors (344642742).

1997464249 is an equidigital number, since it uses as much as digits as its factorization.

1997464249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534 (or 267 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 55.

The cubic root of 1997464249 is about 1259.3883503555.

The spelling of 1997464249 in words is "one billion, nine hundred ninety-seven million, four hundred sixty-four thousand, two hundred forty-nine".