13421487 has 8 divisors (see below), whose sum is σ = 18036736. Its totient is φ = 8876952.

The previous prime is 13421453. The next prime is 13421501. The reversal of 13421487 is 78412431.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13421487 - 2¹⁴ = 13405103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13421407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17233 + ... + 17994.

It is an arithmetic number, because the mean of its divisors is an integer number (2254592).

Almost surely, 2^13421487 is an apocalyptic number.

13421487 is a deficient number, since it is larger than the sum of its proper divisors (4615249).

13421487 is a wasteful number, since it uses less digits than its factorization.

13421487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35357.

The product of its digits is 5376, while the sum is 30.

The square root of 13421487 is about 3663.5347684989. The cubic root of 13421487 is about 237.6476614530.

The spelling of 13421487 in words is "thirteen million, four hundred twenty-one thousand, four hundred eighty-seven".