379925959821 has 4 divisors (see below), whose sum is σ = 506567946432. Its totient is φ = 253283973212.

The previous prime is 379925959817. The next prime is 379925959837. The reversal of 379925959821 is 128959529973.

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, and also an emirpimes, since its reverse is a distinct semiprime: 128959529973 = 3 ⋅42986509991.

It is a cyclic number.

It is not a de Polignac number, because 379925959821 - 2² = 379925959817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (379925959121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63320993301 + ... + 63320993306.

It is an arithmetic number, because the mean of its divisors is an integer number (126641986608).

Almost surely, 2^379925959821 is an apocalyptic number.

It is an amenable number.

379925959821 is a deficient number, since it is larger than the sum of its proper divisors (126641986611).

379925959821 is a wasteful number, since it uses less digits than its factorization.

379925959821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126641986610.

The product of its digits is 110224800, while the sum is 69.

The spelling of 379925959821 in words is "three hundred seventy-nine billion, nine hundred twenty-five million, nine hundred fifty-nine thousand, eight hundred twenty-one".