149799071 has 4 divisors (see below), whose sum is σ = 149827944. Its totient is φ = 149770200.

The previous prime is 149799061. The next prime is 149799079. The reversal of 149799071 is 170997941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 170997941 = 571 ⋅299471.

It is a cyclic number.

It is not a de Polignac number, because 149799071 - 2¹⁸ = 149536927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149799079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4265 + ... + 17826.

It is an arithmetic number, because the mean of its divisors is an integer number (37456986).

Almost surely, 2^149799071 is an apocalyptic number.

149799071 is a deficient number, since it is larger than the sum of its proper divisors (28873).

149799071 is an equidigital number, since it uses as much as digits as its factorization.

149799071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28872.

The product of its (nonzero) digits is 142884, while the sum is 47.

The square root of 149799071 is about 12239.2430730009. The cubic root of 149799071 is about 531.0919353327.

The spelling of 149799071 in words is "one hundred forty-nine million, seven hundred ninety-nine thousand, seventy-one".