13469978 has 16 divisors (see below), whose sum is σ = 21202560. Its totient is φ = 6409200.

The previous prime is 13469971. The next prime is 13469983. The reversal of 13469978 is 87996431.

It is not an unprimeable number, because it can be changed into a prime (13469971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2483 + ... + 5753.

It is an arithmetic number, because the mean of its divisors is an integer number (1325160).

Almost surely, 2^13469978 is an apocalyptic number.

13469978 is a deficient number, since it is larger than the sum of its proper divisors (7732582).

13469978 is a wasteful number, since it uses less digits than its factorization.

13469978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3373.

The product of its digits is 326592, while the sum is 47.

The square root of 13469978 is about 3670.1468635465. The cubic root of 13469978 is about 237.9335195529.

The spelling of 13469978 in words is "thirteen million, four hundred sixty-nine thousand, nine hundred seventy-eight".