1387951244 has 6 divisors (see below), whose sum is σ = 2428914684. Its totient is φ = 693975620.

The previous prime is 1387951231. The next prime is 1387951309. The reversal of 1387951244 is 4421597831.

It is a super-2 number, since 2×1387951244² = 3852817311442295072, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1387951195 and 1387951204.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173493902 + ... + 173493909.

It is an arithmetic number, because the mean of its divisors is an integer number (404819114).

Almost surely, 2^1387951244 is an apocalyptic number.

It is an amenable number.

1387951244 is a deficient number, since it is larger than the sum of its proper divisors (1040963440).

1387951244 is a wasteful number, since it uses less digits than its factorization.

1387951244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 346987815 (or 346987813 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 1387951244 is about 37255.2176748439. The cubic root of 1387951244 is about 1115.4704507946.

The spelling of 1387951244 in words is "one billion, three hundred eighty-seven million, nine hundred fifty-one thousand, two hundred forty-four".