2049405 has 16 divisors (see below), whose sum is σ = 3297024.
Its totient is φ = 1087040.
The previous prime is 2049361. The next prime is 2049407. The reversal of 2049405 is 5049402.
It is not a de Polignac number, because 2049405 - 28 = 2049149 is a prime.
It is an Ulam number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (2049407) by changing a digit.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4540 + ... + 4970.
It is an arithmetic number, because the mean of its divisors is an integer number (206064).
22049405 is an apocalyptic number.
It is an amenable number.
2049405 is a deficient number, since it is larger than the sum of its proper divisors (1247619).
2049405 is a wasteful number, since it uses less digits than its factorization.
2049405 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 756.
The product of its (nonzero) digits is 1440, while the sum is 24.
The square root of 2049405 is about 1431.5743082355.
The cubic root of 2049405 is about 127.0211178639.
The spelling of 2049405 in words is "two million, forty-nine thousand, four hundred five".