1390406427774 has 160 divisors (see below), whose sum is σ = 3938148156096. Its totient is φ = 356789629440.

The previous prime is 1390406427769. The next prime is 1390406427821. The reversal of 1390406427774 is 4777246040931.

It is a happy number.

1390406427774 is a `hidden beast` number, since 13 + 90 + 406 + 4 + 2 + 77 + 74 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1390406427774.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 729087 + ... + 1819994.

Almost surely, 2^{1390406427774} is an apocalyptic number.

1390406427774 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1390406427774 is an abundant number, since it is smaller than the sum of its proper divisors (2547741728322).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1390406427774 is a wasteful number, since it uses less digits than its factorization.

1390406427774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2549152 (or 2549143 counting only the distinct ones).

The product of its (nonzero) digits is 7112448, while the sum is 54.

The spelling of 1390406427774 in words is "one trillion, three hundred ninety billion, four hundred six million, four hundred twenty-seven thousand, seven hundred seventy-four".