13409474 has 24 divisors (see below), whose sum is σ = 22058820. Its totient is φ = 6110208.

The previous prime is 13409441. The next prime is 13409491. The reversal of 13409474 is 47490431.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 4439449 + 8970025 = 2107^2 + 2995^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 13409474.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 32582 + ... + 32990.

Almost surely, 2^13409474 is an apocalyptic number.

13409474 is a deficient number, since it is larger than the sum of its proper divisors (8649346).

13409474 is a wasteful number, since it uses less digits than its factorization.

13409474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 521 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 13409474 is about 3661.8948646841. The cubic root of 13409474 is about 237.5767375299.

The spelling of 13409474 in words is "thirteen million, four hundred nine thousand, four hundred seventy-four".