1386979090 has 16 divisors (see below), whose sum is σ = 2853214272. Its totient is φ = 475535664.

The previous prime is 1386979079. The next prime is 1386979117. The reversal of 1386979090 is 909796831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9906924 + ... + 9907063.

It is an arithmetic number, because the mean of its divisors is an integer number (178325892).

Almost surely, 2^1386979090 is an apocalyptic number.

1386979090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1386979090 is an abundant number, since it is smaller than the sum of its proper divisors (1466235182).

1386979090 is a wasteful number, since it uses less digits than its factorization.

1386979090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19814001.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 1386979090 is about 37242.1681699656. The cubic root of 1386979090 is about 1115.2099559715.

The spelling of 1386979090 in words is "one billion, three hundred eighty-six million, nine hundred seventy-nine thousand, ninety".