40343489 has 4 divisors (see below), whose sum is σ = 40357824. Its totient is φ = 40329156.

The previous prime is 40343461. The next prime is 40343519. The reversal of 40343489 is 98434304.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40343489 - 2¹² = 40339393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40343419) 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, 1397 + ... + 9090.

It is an arithmetic number, because the mean of its divisors is an integer number (10089456).

Almost surely, 2^40343489 is an apocalyptic number.

It is an amenable number.

40343489 is a deficient number, since it is larger than the sum of its proper divisors (14335).

40343489 is a wasteful number, since it uses less digits than its factorization.

40343489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14334.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 40343489 is about 6351.6524621550. The cubic root of 40343489 is about 342.9713304101.

The spelling of 40343489 in words is "forty million, three hundred forty-three thousand, four hundred eighty-nine".