1396752408 has 48 divisors (see below), whose sum is σ = 3788272800. Its totient is φ = 464919360.

The previous prime is 1396752361. The next prime is 1396752431. The reversal of 1396752408 is 8042576931.

1396752408 is a `hidden beast` number, since 139 + 67 + 52 + 408 = 666.

1396752408 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

1396752408 is strictly pandigital in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38278 + ... + 65258.

It is an arithmetic number, because the mean of its divisors is an integer number (78922350).

It is a 2-persistent number, because it is pandigital, and so is 2⋅1396752408 = 2793504816, but 3⋅1396752408 = 4190257224 is not.

It is a vampire number, since it can be written as 17256 ⋅ 80943 (with its own digits).

Almost surely, 2^1396752408 is an apocalyptic number.

1396752408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1396752408 is an abundant number, since it is smaller than the sum of its proper divisors (2391520392).

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

1396752408 is a wasteful number, since it uses less digits than its factorization.

1396752408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27712 (or 27705 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 1396752408 is about 37373.1508974023. The cubic root of 1396752408 is about 1117.8232615845.

The spelling of 1396752408 in words is "one billion, three hundred ninety-six million, seven hundred fifty-two thousand, four hundred eight".