288404897 has 4 divisors (see below), whose sum is σ = 314623536. Its totient is φ = 262186260.

The previous prime is 288404891. The next prime is 288404903. The reversal of 288404897 is 798404882.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (288404891) and next prime (288404903).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-288404897 is a prime.

It is a super-2 number, since 2×288404897² = 166354769227161218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (288404891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13109303 + ... + 13109324.

It is an arithmetic number, because the mean of its divisors is an integer number (78655884).

Almost surely, 2^288404897 is an apocalyptic number.

It is an amenable number.

288404897 is a deficient number, since it is larger than the sum of its proper divisors (26218639).

288404897 is a wasteful number, since it uses less digits than its factorization.

288404897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26218638.

The product of its (nonzero) digits is 1032192, while the sum is 50.

The square root of 288404897 is about 16982.4879508275. The cubic root of 288404897 is about 660.6947818147.

The spelling of 288404897 in words is "two hundred eighty-eight million, four hundred four thousand, eight hundred ninety-seven".