11897473 has 4 divisors (see below), whose sum is σ = 13597120. Its totient is φ = 10197828.

The previous prime is 11897471. The next prime is 11897489. The reversal of 11897473 is 37479811.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 37479811 = 23 ⋅1629557.

It is a cyclic number.

It is not a de Polignac number, because 11897473 - 2¹ = 11897471 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11897471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849813 + ... + 849826.

It is an arithmetic number, because the mean of its divisors is an integer number (3399280).

Almost surely, 2^11897473 is an apocalyptic number.

It is an amenable number.

11897473 is a deficient number, since it is larger than the sum of its proper divisors (1699647).

11897473 is an equidigital number, since it uses as much as digits as its factorization.

11897473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1699646.

The product of its digits is 42336, while the sum is 40.

The square root of 11897473 is about 3449.2713723336. The cubic root of 11897473 is about 228.2889598299.

The spelling of 11897473 in words is "eleven million, eight hundred ninety-seven thousand, four hundred seventy-three".