137403407 has 2 divisors, whose sum is σ = 137403408. Its totient is φ = 137403406.

The previous prime is 137403379. The next prime is 137403433. The reversal of 137403407 is 704304731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137403407 - 2⁸ = 137403151 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 137403407.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137403907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68701703 + 68701704.

It is an arithmetic number, because the mean of its divisors is an integer number (68701704).

Almost surely, 2^137403407 is an apocalyptic number.

137403407 is a deficient number, since it is larger than the sum of its proper divisors (1).

137403407 is an equidigital number, since it uses as much as digits as its factorization.

137403407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7056, while the sum is 29.

The square root of 137403407 is about 11721.9199365974. The cubic root of 137403407 is about 516.0191675571.

The spelling of 137403407 in words is "one hundred thirty-seven million, four hundred three thousand, four hundred seven".