149453947 has 2 divisors, whose sum is σ = 149453948. Its totient is φ = 149453946.

The previous prime is 149453921. The next prime is 149453999. The reversal of 149453947 is 749354941.

It is a weak prime.

It is an emirp because it is prime and its reverse (749354941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149453947 - 2⁷ = 149453819 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149453897 and 149453906.

It is not a weakly prime, because it can be changed into another prime (149450947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74726973 + 74726974.

It is an arithmetic number, because the mean of its divisors is an integer number (74726974).

Almost surely, 2^149453947 is an apocalyptic number.

149453947 is a deficient number, since it is larger than the sum of its proper divisors (1).

149453947 is an equidigital number, since it uses as much as digits as its factorization.

149453947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 46.

The square root of 149453947 is about 12225.1358683656. The cubic root of 149453947 is about 530.6837585314.

The spelling of 149453947 in words is "one hundred forty-nine million, four hundred fifty-three thousand, nine hundred forty-seven".