693141421 has 4 divisors (see below), whose sum is σ = 792161632. Its totient is φ = 594121212.

The previous prime is 693141419. The next prime is 693141433. The reversal of 693141421 is 124141396.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 693141421 - 2¹ = 693141419 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (693141721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49510095 + ... + 49510108.

It is an arithmetic number, because the mean of its divisors is an integer number (198040408).

Almost surely, 2^693141421 is an apocalyptic number.

It is an amenable number.

693141421 is a deficient number, since it is larger than the sum of its proper divisors (99020211).

693141421 is an equidigital number, since it uses as much as digits as its factorization.

693141421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99020210.

The product of its digits is 5184, while the sum is 31.

The square root of 693141421 is about 26327.5790949339. The cubic root of 693141421 is about 884.9945932618.

The spelling of 693141421 in words is "six hundred ninety-three million, one hundred forty-one thousand, four hundred twenty-one".