149403547 has 2 divisors, whose sum is σ = 149403548. Its totient is φ = 149403546.

The previous prime is 149403509. The next prime is 149403577. The reversal of 149403547 is 745304941.

It is a strong prime.

It is an emirp because it is prime and its reverse (745304941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149403547 - 2¹⁵ = 149370779 is a prime.

It is not a weakly prime, because it can be changed into another prime (149403577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74701773 + 74701774.

It is an arithmetic number, because the mean of its divisors is an integer number (74701774).

Almost surely, 2^149403547 is an apocalyptic number.

149403547 is a deficient number, since it is larger than the sum of its proper divisors (1).

149403547 is an equidigital number, since it uses as much as digits as its factorization.

149403547 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 149403547 is about 12223.0743677685. The cubic root of 149403547 is about 530.6240980829.

The spelling of 149403547 in words is "one hundred forty-nine million, four hundred three thousand, five hundred forty-seven".