421693797 has 16 divisors (see below), whose sum is σ = 644212352. Its totient is φ = 240356160.

The previous prime is 421693777. The next prime is 421693813. The reversal of 421693797 is 797396124.

It is a happy number.

It is not a de Polignac number, because 421693797 - 2¹⁰ = 421692773 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421693777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16954 + ... + 33627.

It is an arithmetic number, because the mean of its divisors is an integer number (40263272).

Almost surely, 2^421693797 is an apocalyptic number.

It is an amenable number.

421693797 is a deficient number, since it is larger than the sum of its proper divisors (222518555).

421693797 is a wasteful number, since it uses less digits than its factorization.

421693797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50988.

The product of its digits is 571536, while the sum is 48.

The square root of 421693797 is about 20535.1843673243. The cubic root of 421693797 is about 749.8926050669.

The spelling of 421693797 in words is "four hundred twenty-one million, six hundred ninety-three thousand, seven hundred ninety-seven".