16309934 has 4 divisors (see below), whose sum is σ = 24464904. Its totient is φ = 8154966.

The previous prime is 16309897. The next prime is 16309939. The reversal of 16309934 is 43990361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43990361 = 29 ⋅1516909.

It is a junction number, because it is equal to n+sod(n) for n = 16309894 and 16309903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16309939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4077482 + ... + 4077485.

It is an arithmetic number, because the mean of its divisors is an integer number (6116226).

Almost surely, 2^16309934 is an apocalyptic number.

16309934 is a deficient number, since it is larger than the sum of its proper divisors (8154970).

16309934 is an equidigital number, since it uses as much as digits as its factorization.

16309934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8154969.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 16309934 is about 4038.5559300324. Note that the first 3 decimals coincide. The cubic root of 16309934 is about 253.6008673391.

The spelling of 16309934 in words is "sixteen million, three hundred nine thousand, nine hundred thirty-four".