1379406291 has 8 divisors (see below), whose sum is σ = 1851389184. Its totient is φ = 913513800.

The previous prime is 1379406277. The next prime is 1379406311. The reversal of 1379406291 is 1926049731.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1379406291 - 2²¹ = 1377309139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1379406221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1522071 + ... + 1522976.

It is an arithmetic number, because the mean of its divisors is an integer number (231423648).

Almost surely, 2^1379406291 is an apocalyptic number.

1379406291 is a deficient number, since it is larger than the sum of its proper divisors (471982893).

1379406291 is a wasteful number, since it uses less digits than its factorization.

1379406291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3045201.

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 1379406291 is about 37140.3593278256. The cubic root of 1379406291 is about 1113.1765973216.

The spelling of 1379406291 in words is "one billion, three hundred seventy-nine million, four hundred six thousand, two hundred ninety-one".