406149385 has 4 divisors (see below), whose sum is σ = 487379268. Its totient is φ = 324919504.

The previous prime is 406149371. The next prime is 406149427. The reversal of 406149385 is 583941604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 242206969 + 163942416 = 15563^2 + 12804^2 .

It is a cyclic number.

It is not a de Polignac number, because 406149385 - 2⁵ = 406149353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40614934 + ... + 40614943.

It is an arithmetic number, because the mean of its divisors is an integer number (121844817).

Almost surely, 2^406149385 is an apocalyptic number.

It is an amenable number.

406149385 is a deficient number, since it is larger than the sum of its proper divisors (81229883).

406149385 is an equidigital number, since it uses as much as digits as its factorization.

406149385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81229882.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 406149385 is about 20153.1482652215. The cubic root of 406149385 is about 740.5628691730.

The spelling of 406149385 in words is "four hundred six million, one hundred forty-nine thousand, three hundred eighty-five".