137440477 has 2 divisors, whose sum is σ = 137440478. Its totient is φ = 137440476.

The previous prime is 137440423. The next prime is 137440489. The reversal of 137440477 is 774044731.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136913401 + 527076 = 11701^2 + 726^2 .

It is a cyclic number.

It is not a de Polignac number, because 137440477 - 2¹⁹ = 136916189 is a prime.

It is equal to p_7775722 and since 137440477 and 7775722 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137440417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68720238 + 68720239.

It is an arithmetic number, because the mean of its divisors is an integer number (68720239).

Almost surely, 2^137440477 is an apocalyptic number.

It is an amenable number.

137440477 is a deficient number, since it is larger than the sum of its proper divisors (1).

137440477 is an equidigital number, since it uses as much as digits as its factorization.

137440477 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65856, while the sum is 37.

The square root of 137440477 is about 11723.5010555721. The cubic root of 137440477 is about 516.0655689067.

The spelling of 137440477 in words is "one hundred thirty-seven million, four hundred forty thousand, four hundred seventy-seven".