1399761654 has 16 divisors (see below), whose sum is σ = 2946866880. Its totient is φ = 442029960.

The previous prime is 1399761611. The next prime is 1399761667. The reversal of 1399761654 is 4561679931.

It is a junction number, because it is equal to n+sod(n) for n = 1399761597 and 1399761606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6139192 + ... + 6139419.

It is an arithmetic number, because the mean of its divisors is an integer number (184179180).

Almost surely, 2^1399761654 is an apocalyptic number.

1399761654 is an abundant number, since it is smaller than the sum of its proper divisors (1547105226).

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

1399761654 is a wasteful number, since it uses less digits than its factorization.

1399761654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12278635.

The product of its digits is 1224720, while the sum is 51.

The square root of 1399761654 is about 37413.3886997690. The cubic root of 1399761654 is about 1118.6254539463.

The spelling of 1399761654 in words is "one billion, three hundred ninety-nine million, seven hundred sixty-one thousand, six hundred fifty-four".