457147987 has 4 divisors (see below), whose sum is σ = 469503376. Its totient is φ = 444792600.

The previous prime is 457147963. The next prime is 457147997. The reversal of 457147987 is 789741754.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 457147987 - 2¹¹ = 457145939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (457147907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6177639 + ... + 6177712.

It is an arithmetic number, because the mean of its divisors is an integer number (117375844).

Almost surely, 2^457147987 is an apocalyptic number.

457147987 is a deficient number, since it is larger than the sum of its proper divisors (12355389).

457147987 is a wasteful number, since it uses less digits than its factorization.

457147987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12355388.

The product of its digits is 1975680, while the sum is 52.

The square root of 457147987 is about 21381.0193162066. The cubic root of 457147987 is about 770.3455956939.

The spelling of 457147987 in words is "four hundred fifty-seven million, one hundred forty-seven thousand, nine hundred eighty-seven".