437987 has 8 divisors (see below), whose sum is σ = 494640. Its totient is φ = 384160.

The previous prime is 437977. The next prime is 438001. The reversal of 437987 is 789734.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 437987 - 2⁶ = 437923 is a prime.

It is a super-2 number, since 2×437987² = 383665224338, which contains 22 as substring.

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 437987.

It is not an unprimeable number, because it can be changed into a prime (437947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368 + ... + 1005.

It is an arithmetic number, because the mean of its divisors is an integer number (61830).

2⁴³⁷⁹⁸⁷ is an apocalyptic number.

437987 is a deficient number, since it is larger than the sum of its proper divisors (56653).

437987 is a wasteful number, since it uses less digits than its factorization.

437987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413.

The product of its digits is 42336, while the sum is 38.

The square root of 437987 is about 661.8058627725. The cubic root of 437987 is about 75.9428818294.

The spelling of 437987 in words is "four hundred thirty-seven thousand, nine hundred eighty-seven".