1390411894 has 4 divisors (see below), whose sum is σ = 2085617844. Its totient is φ = 695205946.

The previous prime is 1390411859. The next prime is 1390411927. The reversal of 1390411894 is 4981140931.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 347602972 + ... + 347602975.

It is an arithmetic number, because the mean of its divisors is an integer number (521404461).

Almost surely, 2^1390411894 is an apocalyptic number.

1390411894 is a deficient number, since it is larger than the sum of its proper divisors (695205950).

1390411894 is an equidigital number, since it uses as much as digits as its factorization.

1390411894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 695205949.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 1390411894 is about 37288.2272842247. The cubic root of 1390411894 is about 1116.1292544160.

The spelling of 1390411894 in words is "one billion, three hundred ninety million, four hundred eleven thousand, eight hundred ninety-four".