1396946988 has 36 divisors (see below), whose sum is σ = 3626612080. Its totient is φ = 453063456.

The previous prime is 1396946987. The next prime is 1396946989. The reversal of 1396946988 is 8896496931.

It is a happy number.

1396946988 is a `hidden beast` number, since 1 + 3 + 96 + 9 + 469 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (1396946987) and next prime (1396946989).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (1396946981) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 523048 + ... + 525711.

Almost surely, 2^1396946988 is an apocalyptic number.

1396946988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1396946988 is an abundant number, since it is smaller than the sum of its proper divisors (2229665092).

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

1396946988 is a wasteful number, since it uses less digits than its factorization.

1396946988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1048806 (or 1048801 counting only the distinct ones).

The product of its digits is 20155392, while the sum is 63.

The square root of 1396946988 is about 37375.7540124611. The cubic root of 1396946988 is about 1117.8751667396.

The spelling of 1396946988 in words is "one billion, three hundred ninety-six million, nine hundred forty-six thousand, nine hundred eighty-eight".