1390326912 has 384 divisors, whose sum is σ = 4704860160. Its totient is φ = 390168576.

The previous prime is 1390326887. The next prime is 1390326947. The reversal of 1390326912 is 2196230931.

It is a happy number.

1390326912 is a `hidden beast` number, since 1 + 390 + 3 + 269 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10947393 + ... + 10947519.

It is an arithmetic number, because the mean of its divisors is an integer number (12252240).

Almost surely, 2^1390326912 is an apocalyptic number.

1390326912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1390326912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2352430080).

1390326912 is an abundant number, since it is smaller than the sum of its proper divisors (3314533248).

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

1390326912 is a wasteful number, since it uses less digits than its factorization.

1390326912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 205 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 1390326912 is about 37287.0877382506. The cubic root of 1390326912 is about 1116.1065146727.

The spelling of 1390326912 in words is "one billion, three hundred ninety million, three hundred twenty-six thousand, nine hundred twelve".