434987 has 4 divisors (see below), whose sum is σ = 497136. Its totient is φ = 372840.

The previous prime is 434981. The next prime is 434989. The reversal of 434987 is 789434.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 789434 = 2 ⋅394717.

It is a cyclic number.

It is not a de Polignac number, because 434987 - 2⁶ = 434923 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (434981) 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, 31064 + ... + 31077.

It is an arithmetic number, because the mean of its divisors is an integer number (124284).

2⁴³⁴⁹⁸⁷ is an apocalyptic number.

434987 is a deficient number, since it is larger than the sum of its proper divisors (62149).

434987 is an equidigital number, since it uses as much as digits as its factorization.

434987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62148.

The product of its digits is 24192, while the sum is 35.

The square root of 434987 is about 659.5354425654. The cubic root of 434987 is about 75.7690937138.

The spelling of 434987 in words is "four hundred thirty-four thousand, nine hundred eighty-seven".