10988405 has 4 divisors (see below), whose sum is σ = 13186092. Its totient is φ = 8790720.

The previous prime is 10988401. The next prime is 10988407. The reversal of 10988405 is 50488901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50488901 = 251 ⋅201151.

It can be written as a sum of positive squares in 2 ways, for example, as 6895876 + 4092529 = 2626^2 + 2023^2 .

It is not a de Polignac number, because 10988405 - 2² = 10988401 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 (10988401) 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, 1098836 + ... + 1098845.

It is an arithmetic number, because the mean of its divisors is an integer number (3296523).

Almost surely, 2^10988405 is an apocalyptic number.

It is an amenable number.

10988405 is a deficient number, since it is larger than the sum of its proper divisors (2197687).

10988405 is an equidigital number, since it uses as much as digits as its factorization.

10988405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197686.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 10988405 is about 3314.8763174514. The cubic root of 10988405 is about 222.3198390112.

The spelling of 10988405 in words is "ten million, nine hundred eighty-eight thousand, four hundred five".