1387938 has 8 divisors (see below), whose sum is σ = 2775888. Its totient is φ = 462644.

The previous prime is 1387927. The next prime is 1387943. The reversal of 1387938 is 8397831.

It is a sphenic number, since it is the product of 3 distinct primes.

1387938 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 1387896 and 1387905.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115656 + ... + 115667.

It is an arithmetic number, because the mean of its divisors is an integer number (346986).

2^1387938 is an apocalyptic number.

1387938 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1387938 is a wasteful number, since it uses less digits than its factorization.

1387938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231328.

The product of its digits is 36288, while the sum is 39.

The square root of 1387938 is about 1178.1078049143. The cubic root of 1387938 is about 111.5466902798.

The spelling of 1387938 in words is "one million, three hundred eighty-seven thousand, nine hundred thirty-eight".