8405949 has 8 divisors (see below), whose sum is σ = 11248672. Its totient is φ = 5583600.

The previous prime is 8405921. The next prime is 8405951. The reversal of 8405949 is 9495048.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8405949 - 2¹⁵ = 8373181 is a prime.

It is a Duffinian number.

8405949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8405149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4102 + ... + 5799.

It is an arithmetic number, because the mean of its divisors is an integer number (1406084).

Almost surely, 2^8405949 is an apocalyptic number.

It is an amenable number.

8405949 is a deficient number, since it is larger than the sum of its proper divisors (2842723).

8405949 is a wasteful number, since it uses less digits than its factorization.

8405949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10187.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 8405949 is about 2899.3014675953. The cubic root of 8405949 is about 203.3272484667.

The spelling of 8405949 in words is "eight million, four hundred five thousand, nine hundred forty-nine".