1238486477 has 6 divisors (see below), whose sum is σ = 1259126154. Its totient is φ = 1218179760.

The previous prime is 1238486471. The next prime is 1238486479. The reversal of 1238486477 is 7746848321.

It can be written as a sum of positive squares in 3 ways, for example, as 12716356 + 1225770121 = 3566^2 + 35011^2 .

It is not a de Polignac number, because 1238486477 - 2⁴ = 1238486461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1238486471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 162698 + ... + 170139.

It is an arithmetic number, because the mean of its divisors is an integer number (209854359).

Almost surely, 2^1238486477 is an apocalyptic number.

It is an amenable number.

1238486477 is a deficient number, since it is larger than the sum of its proper divisors (20639677).

1238486477 is an frugal number, since it uses more digits than its factorization.

1238486477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 332959 (or 332898 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 50.

The square root of 1238486477 is about 35192.1365790712. The cubic root of 1238486477 is about 1073.8997871488.

The spelling of 1238486477 in words is "one billion, two hundred thirty-eight million, four hundred eighty-six thousand, four hundred seventy-seven".