19413897 has 8 divisors (see below), whose sum is σ = 25945920. Its totient is φ = 12912240.

The previous prime is 19413893. The next prime is 19413931. The reversal of 19413897 is 79831491.

It is a happy number.

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

It is not a de Polignac number, because 19413897 - 2² = 19413893 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19413893) 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, 6054 + ... + 8687.

It is an arithmetic number, because the mean of its divisors is an integer number (3243240).

Almost surely, 2^19413897 is an apocalyptic number.

It is an amenable number.

19413897 is a deficient number, since it is larger than the sum of its proper divisors (6532023).

19413897 is a wasteful number, since it uses less digits than its factorization.

19413897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15183.

The product of its digits is 54432, while the sum is 42.

The square root of 19413897 is about 4406.1204023494. The cubic root of 19413897 is about 268.7638830398.

The spelling of 19413897 in words is "nineteen million, four hundred thirteen thousand, eight hundred ninety-seven".