137477869 has 2 divisors, whose sum is σ = 137477870. Its totient is φ = 137477868.

The previous prime is 137477843. The next prime is 137477887. The reversal of 137477869 is 968774731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104816644 + 32661225 = 10238^2 + 5715^2 .

It is an emirp because it is prime and its reverse (968774731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 137477869 - 2⁹ = 137477357 is a prime.

It is a super-2 number, since 2×137477869² = 37800328929562322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137477569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68738934 + 68738935.

It is an arithmetic number, because the mean of its divisors is an integer number (68738935).

Almost surely, 2^137477869 is an apocalyptic number.

It is an amenable number.

137477869 is a deficient number, since it is larger than the sum of its proper divisors (1).

137477869 is an equidigital number, since it uses as much as digits as its factorization.

137477869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1778112, while the sum is 52.

The square root of 137477869 is about 11725.0956925733. The cubic root of 137477869 is about 516.1123648591.

The spelling of 137477869 in words is "one hundred thirty-seven million, four hundred seventy-seven thousand, eight hundred sixty-nine".