421793405 has 16 divisors (see below), whose sum is σ = 557060544. Its totient is φ = 304039680.

The previous prime is 421793399. The next prime is 421793413. The reversal of 421793405 is 504397124.

It is not a de Polignac number, because 421793405 - 2¹² = 421789309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27719 + ... + 40148.

It is an arithmetic number, because the mean of its divisors is an integer number (34816284).

Almost surely, 2^421793405 is an apocalyptic number.

It is an amenable number.

421793405 is a deficient number, since it is larger than the sum of its proper divisors (135267139).

421793405 is a wasteful number, since it uses less digits than its factorization.

421793405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67996.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 421793405 is about 20537.6095249666. The cubic root of 421793405 is about 749.9516442898.

The spelling of 421793405 in words is "four hundred twenty-one million, seven hundred ninety-three thousand, four hundred five".