149444623 has 2 divisors, whose sum is σ = 149444624. Its totient is φ = 149444622.

The previous prime is 149444621. The next prime is 149444677. The reversal of 149444623 is 326444941.

It is a weak prime.

It is an emirp because it is prime and its reverse (326444941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149444623 - 2¹ = 149444621 is a prime.

It is a super-2 number, since 2×149444623² = 44667390687224258, which contains 22 as substring.

Together with 149444621, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149444621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74722311 + 74722312.

It is an arithmetic number, because the mean of its divisors is an integer number (74722312).

Almost surely, 2^149444623 is an apocalyptic number.

149444623 is a deficient number, since it is larger than the sum of its proper divisors (1).

149444623 is an equidigital number, since it uses as much as digits as its factorization.

149444623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 37.

The square root of 149444623 is about 12224.7545169627. The cubic root of 149444623 is about 530.6727223597.

The spelling of 149444623 in words is "one hundred forty-nine million, four hundred forty-four thousand, six hundred twenty-three".