149400047 has 2 divisors, whose sum is σ = 149400048. Its totient is φ = 149400046.

The previous prime is 149399993. The next prime is 149400049. The reversal of 149400047 is 740004941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149400047 - 2¹⁸ = 149137903 is a prime.

Together with 149400049, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 149399992 and 149400019.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149400049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74700023 + 74700024.

It is an arithmetic number, because the mean of its divisors is an integer number (74700024).

Almost surely, 2^149400047 is an apocalyptic number.

149400047 is a deficient number, since it is larger than the sum of its proper divisors (1).

149400047 is an equidigital number, since it uses as much as digits as its factorization.

149400047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 149400047 is about 12222.9311950939. The cubic root of 149400047 is about 530.6199544980.

Adding to 149400047 its reverse (740004941), we get a palindrome (889404988).

The spelling of 149400047 in words is "one hundred forty-nine million, four hundred thousand, forty-seven".