137547979 has 2 divisors, whose sum is σ = 137547980. Its totient is φ = 137547978.

The previous prime is 137547941. The next prime is 137547983. The reversal of 137547979 is 979745731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 137547979 - 2¹¹ = 137545931 is a prime.

It is not a weakly prime, because it can be changed into another prime (137547079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68773989 + 68773990.

It is an arithmetic number, because the mean of its divisors is an integer number (68773990).

Almost surely, 2^137547979 is an apocalyptic number.

137547979 is a deficient number, since it is larger than the sum of its proper divisors (1).

137547979 is an equidigital number, since it uses as much as digits as its factorization.

137547979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1666980, while the sum is 52.

The square root of 137547979 is about 11728.0850525565. The cubic root of 137547979 is about 516.2000844046.

The spelling of 137547979 in words is "one hundred thirty-seven million, five hundred forty-seven thousand, nine hundred seventy-nine".