421633377 has 16 divisors (see below), whose sum is σ = 681428160. Its totient is φ = 255535200.

The previous prime is 421633367. The next prime is 421633409. The reversal of 421633377 is 773336124.

It is a de Polignac number, because none of the positive numbers 2^k-421633377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421633307) by changing a digit.

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, 709524 + ... + 710117.

It is an arithmetic number, because the mean of its divisors is an integer number (42589260).

Almost surely, 2^421633377 is an apocalyptic number.

It is an amenable number.

421633377 is a deficient number, since it is larger than the sum of its proper divisors (259794783).

421633377 is a wasteful number, since it uses less digits than its factorization.

421633377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1419661 (or 1419655 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 421633377 is about 20533.7131810104. The cubic root of 421633377 is about 749.8567886558.

The spelling of 421633377 in words is "four hundred twenty-one million, six hundred thirty-three thousand, three hundred seventy-seven".