2397987445 has 64 divisors (see below), whose sum is σ = 3588157440. Its totient is φ = 1501221888.

The previous prime is 2397987443. The next prime is 2397987451. The reversal of 2397987445 is 5447897932.

2397987445 = T₇₄₆₉ + T₇₄₇₀ + ... + T₇₅₅₃.

It is a cyclic number.

It is not a de Polignac number, because 2397987445 - 2¹ = 2397987443 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 2397987445.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2397987443) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2913304 + ... + 2914126.

It is an arithmetic number, because the mean of its divisors is an integer number (56064960).

It is a vampire number, since it can be written as 24485 ⋅ 97937 (with its own digits).

Almost surely, 2^2397987445 is an apocalyptic number.

2397987445 is the 24485-th decagonal number.

It is an amenable number.

2397987445 is a deficient number, since it is larger than the sum of its proper divisors (1190169995).

2397987445 is a wasteful number, since it uses less digits than its factorization.

2397987445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 994.

The product of its digits is 15240960, while the sum is 58.

The square root of 2397987445 is about 48969.2499942566. The cubic root of 2397987445 is about 1338.4915536650.

The spelling of 2397987445 in words is "two billion, three hundred ninety-seven million, nine hundred eighty-seven thousand, four hundred forty-five".