40434287 has 4 divisors (see below), whose sum is σ = 41003856. Its totient is φ = 39864720.

The previous prime is 40434281. The next prime is 40434307. The reversal of 40434287 is 78243404.

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 40434287 - 2¹⁴ = 40417903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40434281) 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, 284678 + ... + 284819.

It is an arithmetic number, because the mean of its divisors is an integer number (10250964).

Almost surely, 2^40434287 is an apocalyptic number.

40434287 is a deficient number, since it is larger than the sum of its proper divisors (569569).

40434287 is an equidigital number, since it uses as much as digits as its factorization.

40434287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569568.

The product of its (nonzero) digits is 21504, while the sum is 32.

The square root of 40434287 is about 6358.7960338416. The cubic root of 40434287 is about 343.2284373889.

The spelling of 40434287 in words is "forty million, four hundred thirty-four thousand, two hundred eighty-seven".