1283955739 has 16 divisors (see below), whose sum is σ = 1409481216. Its totient is φ = 1159927200.

The previous prime is 1283955731. The next prime is 1283955769. The reversal of 1283955739 is 9375593821.

It is a cyclic number.

It is not a de Polignac number, because 1283955739 - 2³ = 1283955731 is a prime.

It is a super-2 number, since 2×1283955739² = 3297084679422072242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1283955731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2248324 + ... + 2248894.

It is an arithmetic number, because the mean of its divisors is an integer number (88092576).

Almost surely, 2^1283955739 is an apocalyptic number.

1283955739 is a deficient number, since it is larger than the sum of its proper divisors (125525477).

1283955739 is a wasteful number, since it uses less digits than its factorization.

1283955739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506.

The product of its digits is 2041200, while the sum is 52.

The square root of 1283955739 is about 35832.3281269861. The cubic root of 1283955739 is about 1086.8843888692.

The spelling of 1283955739 in words is "one billion, two hundred eighty-three million, nine hundred fifty-five thousand, seven hundred thirty-nine".