10423809 has 20 divisors (see below), whose sum is σ = 16988400. Its totient is φ = 6316920.

The previous prime is 10423753. The next prime is 10423823. The reversal of 10423809 is 90832401.

It is not a de Polignac number, because 10423809 - 2¹³ = 10415617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (10423849) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4959 + ... + 6740.

It is an arithmetic number, because the mean of its divisors is an integer number (849420).

Almost surely, 2^10423809 is an apocalyptic number.

It is an amenable number.

10423809 is a deficient number, since it is larger than the sum of its proper divisors (6564591).

10423809 is a wasteful number, since it uses less digits than its factorization.

10423809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11722 (or 11713 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 10423809 is about 3228.5924177573. The cubic root of 10423809 is about 218.4450200030.

It can be divided in two parts, 1042 and 3809, that added together give a triangular number (4851 = T₉₈).

The spelling of 10423809 in words is "ten million, four hundred twenty-three thousand, eight hundred nine".