1379007421 has 4 divisors (see below), whose sum is σ = 1504371744. Its totient is φ = 1253643100.

The previous prime is 1379007397. The next prime is 1379007437. The reversal of 1379007421 is 1247009731.

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 1379007421 - 2¹¹ = 1379005373 is a prime.

It is a super-2 number, since 2×1379007421² = 3803322934346142482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1379007491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62682145 + ... + 62682166.

It is an arithmetic number, because the mean of its divisors is an integer number (376092936).

Almost surely, 2^1379007421 is an apocalyptic number.

1379007421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1379007421 is a deficient number, since it is larger than the sum of its proper divisors (125364323).

1379007421 is a wasteful number, since it uses less digits than its factorization.

1379007421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125364322.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 1379007421 is about 37134.9891746315. The cubic root of 1379007421 is about 1113.0692913605.

The spelling of 1379007421 in words is "one billion, three hundred seventy-nine million, seven thousand, four hundred twenty-one".