1397406779126 has 8 divisors (see below), whose sum is σ = 2102722504560. Its totient is φ = 696499277608.

The previous prime is 1397406779101. The next prime is 1397406779149. The reversal of 1397406779126 is 6219776047931.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1102055186 + ... + 1102056453.

It is an arithmetic number, because the mean of its divisors is an integer number (262840313070).

Almost surely, 2^{1397406779126} is an apocalyptic number.

1397406779126 is a deficient number, since it is larger than the sum of its proper divisors (705315725434).

1397406779126 is a wasteful number, since it uses less digits than its factorization.

1397406779126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2204111958.

The product of its (nonzero) digits is 24004512, while the sum is 62.

The spelling of 1397406779126 in words is "one trillion, three hundred ninety-seven billion, four hundred six million, seven hundred seventy-nine thousand, one hundred twenty-six".