1390897411 has 4 divisors (see below), whose sum is σ = 1391033952. Its totient is φ = 1390760872.

The previous prime is 1390897379. The next prime is 1390897433. The reversal of 1390897411 is 1147980931.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1147980931 = 19 ⋅60420049.

It is a cyclic number.

It is not a de Polignac number, because 1390897411 - 2⁵ = 1390897379 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1390897481) 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, 51640 + ... + 73813.

It is an arithmetic number, because the mean of its divisors is an integer number (347758488).

Almost surely, 2^1390897411 is an apocalyptic number.

1390897411 is a deficient number, since it is larger than the sum of its proper divisors (136541).

1390897411 is a wasteful number, since it uses less digits than its factorization.

1390897411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136540.

The product of its (nonzero) digits is 54432, while the sum is 43.

The square root of 1390897411 is about 37294.7370415720. The cubic root of 1390897411 is about 1116.2591527736.

The spelling of 1390897411 in words is "one billion, three hundred ninety million, eight hundred ninety-seven thousand, four hundred eleven".