1379190421 has 4 divisors (see below), whose sum is σ = 1576217632. Its totient is φ = 1182163212.

The previous prime is 1379190391. The next prime is 1379190457. The reversal of 1379190421 is 1240919731.

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 1379190421 - 2⁵ = 1379190389 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 (1379190721) 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, 98513595 + ... + 98513608.

It is an arithmetic number, because the mean of its divisors is an integer number (394054408).

Almost surely, 2^1379190421 is an apocalyptic number.

It is an amenable number.

1379190421 is a deficient number, since it is larger than the sum of its proper divisors (197027211).

1379190421 is an equidigital number, since it uses as much as digits as its factorization.

1379190421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197027210.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1379190421 is about 37137.4530763756. The cubic root of 1379190421 is about 1113.1185254854.

The spelling of 1379190421 in words is "one billion, three hundred seventy-nine million, one hundred ninety thousand, four hundred twenty-one".