405354894 has 32 divisors (see below), whose sum is σ = 948076800. Its totient is φ = 113121792.

The previous prime is 405354889. The next prime is 405354913. The reversal of 405354894 is 498453504.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110419 + ... + 114030.

It is an arithmetic number, because the mean of its divisors is an integer number (29627400).

Almost surely, 2^405354894 is an apocalyptic number.

405354894 is an abundant number, since it is smaller than the sum of its proper divisors (542721906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

405354894 is a wasteful number, since it uses less digits than its factorization.

405354894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224504.

The product of its (nonzero) digits is 345600, while the sum is 42.

The square root of 405354894 is about 20133.4272790303. The cubic root of 405354894 is about 740.0796688026.

The spelling of 405354894 in words is "four hundred five million, three hundred fifty-four thousand, eight hundred ninety-four".