405034769 has 4 divisors (see below), whose sum is σ = 405080244. Its totient is φ = 404989296.

The previous prime is 405034757. The next prime is 405034787. The reversal of 405034769 is 967430504.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 62599744 + 342435025 = 7912^2 + 18505^2 .

It is a cyclic number.

It is not a de Polignac number, because 405034769 - 2⁴ = 405034753 is a prime.

It is a super-2 number, since 2×405034769² = 328106328197766722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (405034739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4502 + ... + 28815.

It is an arithmetic number, because the mean of its divisors is an integer number (101270061).

Almost surely, 2^405034769 is an apocalyptic number.

It is an amenable number.

405034769 is a deficient number, since it is larger than the sum of its proper divisors (45475).

405034769 is a wasteful number, since it uses less digits than its factorization.

405034769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45474.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 405034769 is about 20125.4756217089. The cubic root of 405034769 is about 739.8847939717.

The spelling of 405034769 in words is "four hundred five million, thirty-four thousand, seven hundred sixty-nine".