16434958 has 4 divisors (see below), whose sum is σ = 24652440. Its totient is φ = 8217478.

The previous prime is 16434889. The next prime is 16434959. The reversal of 16434958 is 85943461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85943461 = 5953 ⋅14437.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 16434958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16434959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4108738 + ... + 4108741.

It is an arithmetic number, because the mean of its divisors is an integer number (6163110).

Almost surely, 2^16434958 is an apocalyptic number.

16434958 is a deficient number, since it is larger than the sum of its proper divisors (8217482).

16434958 is an equidigital number, since it uses as much as digits as its factorization.

16434958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8217481.

The product of its digits is 103680, while the sum is 40.

The square root of 16434958 is about 4054.0051800658. The cubic root of 16434958 is about 254.2472121445.

The spelling of 16434958 in words is "sixteen million, four hundred thirty-four thousand, nine hundred fifty-eight".