405049249 has 32 divisors (see below), whose sum is σ = 468052992. Its totient is φ = 347256000.

The previous prime is 405049241. The next prime is 405049261. The reversal of 405049249 is 942940504.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 405049249 - 2³ = 405049241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (405049241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3091914 + ... + 3092044.

It is an arithmetic number, because the mean of its divisors is an integer number (14626656).

Almost surely, 2^405049249 is an apocalyptic number.

It is an amenable number.

405049249 is a deficient number, since it is larger than the sum of its proper divisors (63003743).

405049249 is a wasteful number, since it uses less digits than its factorization.

405049249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 405049249 is about 20125.8353615446. The cubic root of 405049249 is about 739.8936108314.

The spelling of 405049249 in words is "four hundred five million, forty-nine thousand, two hundred forty-nine".