1399779948 has 48 divisors (see below), whose sum is σ = 3736054784. Its totient is φ = 399582720.

The previous prime is 1399779919. The next prime is 1399779973. The reversal of 1399779948 is 8499779931.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96636 + ... + 110172.

Almost surely, 2^1399779948 is an apocalyptic number.

It is an amenable number.

1399779948 is an abundant number, since it is smaller than the sum of its proper divisors (2336274836).

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

1399779948 is a wasteful number, since it uses less digits than its factorization.

1399779948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14782 (or 14780 counting only the distinct ones).

The product of its digits is 30862944, while the sum is 66.

The square root of 1399779948 is about 37413.6331836404. The cubic root of 1399779948 is about 1118.6303271676.

The spelling of 1399779948 in words is "one billion, three hundred ninety-nine million, seven hundred seventy-nine thousand, nine hundred forty-eight".