405869404 has 12 divisors (see below), whose sum is σ = 716910264. Its totient is φ = 201037904.

The previous prime is 405869381. The next prime is 405869411. The reversal of 405869404 is 404968504.

It is a congruent 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, 473719 + ... + 474574.

It is an arithmetic number, because the mean of its divisors is an integer number (59742522).

Almost surely, 2^405869404 is an apocalyptic number.

It is an amenable number.

405869404 is a deficient number, since it is larger than the sum of its proper divisors (311040860).

405869404 is a wasteful number, since it uses less digits than its factorization.

405869404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 948404 (or 948402 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 405869404 is about 20146.2007336371. The cubic root of 405869404 is about 740.3926598831.

The spelling of 405869404 in words is "four hundred five million, eight hundred sixty-nine thousand, four hundred four".