137091407 has 2 divisors, whose sum is σ = 137091408. Its totient is φ = 137091406.

The previous prime is 137091377. The next prime is 137091421. The reversal of 137091407 is 704190731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137091407 - 2⁶ = 137091343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (137091457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68545703 + 68545704.

It is an arithmetic number, because the mean of its divisors is an integer number (68545704).

Almost surely, 2^137091407 is an apocalyptic number.

137091407 is a deficient number, since it is larger than the sum of its proper divisors (1).

137091407 is an equidigital number, since it uses as much as digits as its factorization.

137091407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 137091407 is about 11708.6039731473. The cubic root of 137091407 is about 515.6282990520.

The spelling of 137091407 in words is "one hundred thirty-seven million, ninety-one thousand, four hundred seven".