11421598 has 4 divisors (see below), whose sum is σ = 17132400. Its totient is φ = 5710798.

The previous prime is 11421589. The next prime is 11421601. The reversal of 11421598 is 89512411.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89512411 = 1171 ⋅76441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2855398 + ... + 2855401.

It is an arithmetic number, because the mean of its divisors is an integer number (4283100).

Almost surely, 2^11421598 is an apocalyptic number.

11421598 is a deficient number, since it is larger than the sum of its proper divisors (5710802).

11421598 is an equidigital number, since it uses as much as digits as its factorization.

11421598 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5710801.

The product of its digits is 2880, while the sum is 31.

The square root of 11421598 is about 3379.5854775401. The cubic root of 11421598 is about 225.2037528807.

It can be divided in two parts, 114 and 21598, that added together give a palindrome (21712).

The spelling of 11421598 in words is "eleven million, four hundred twenty-one thousand, five hundred ninety-eight".