7898457 has 12 divisors (see below), whose sum is σ = 12250896. Its totient is φ = 4513320.

The previous prime is 7898447. The next prime is 7898477. The reversal of 7898457 is 7548987.

It is not a de Polignac number, because 7898457 - 2⁶ = 7898393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7898417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26719 + ... + 27012.

It is an arithmetic number, because the mean of its divisors is an integer number (1020908).

Almost surely, 2^7898457 is an apocalyptic number.

It is an amenable number.

7898457 is a deficient number, since it is larger than the sum of its proper divisors (4352439).

7898457 is a wasteful number, since it uses less digits than its factorization.

7898457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53748 (or 53741 counting only the distinct ones).

The product of its digits is 564480, while the sum is 48.

The square root of 7898457 is about 2810.4193637249. The cubic root of 7898457 is about 199.1502026699.

The spelling of 7898457 in words is "seven million, eight hundred ninety-eight thousand, four hundred fifty-seven".