1387958 has 32 divisors (see below), whose sum is σ = 2564352. Its totient is φ = 554400.

The previous prime is 1387943. The next prime is 1387961. The reversal of 1387958 is 8597831.

It is a happy number.

It is a congruent number.

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, 6473 + ... + 6683.

It is an arithmetic number, because the mean of its divisors is an integer number (80136).

2^1387958 is an apocalyptic number.

1387958 is a deficient number, since it is larger than the sum of its proper divisors (1176394).

1387958 is a wasteful number, since it uses less digits than its factorization.

1387958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260.

The product of its digits is 60480, while the sum is 41.

The square root of 1387958 is about 1178.1162930713. The cubic root of 1387958 is about 111.5472260682.

The spelling of 1387958 in words is "one million, three hundred eighty-seven thousand, nine hundred fifty-eight".