149799073 has 6 divisors (see below), whose sum is σ = 150746342. Its totient is φ = 148853760.

The previous prime is 149799061. The next prime is 149799079. The reversal of 149799073 is 370997941.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1373584 + 148425489 = 1172^2 + 12183^2 .

It is a de Polignac number, because none of the positive numbers 2^k-149799073 is a prime.

It is a Duffinian 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 5 ways as a sum of consecutive naturals, for example, 169593 + ... + 170473.

Almost surely, 2^149799073 is an apocalyptic number.

It is an amenable number.

149799073 is a deficient number, since it is larger than the sum of its proper divisors (947269).

149799073 is an frugal number, since it uses more digits than its factorization.

149799073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1955 (or 1074 counting only the distinct ones).

The product of its (nonzero) digits is 428652, while the sum is 49.

The square root of 149799073 is about 12239.2431547053. The cubic root of 149799073 is about 531.0919376963.

The spelling of 149799073 in words is "one hundred forty-nine million, seven hundred ninety-nine thousand, seventy-three".