149791749 has 8 divisors (see below), whose sum is σ = 199889760. Its totient is φ = 99777456.

The previous prime is 149791729. The next prime is 149791769. The reversal of 149791749 is 947197941.

It is an interprime number because it is at equal distance from previous prime (149791729) and next prime (149791769).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 149791749 - 2¹¹ = 149789701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149791729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16627 + ... + 24000.

It is an arithmetic number, because the mean of its divisors is an integer number (24986220).

Almost surely, 2^149791749 is an apocalyptic number.

It is an amenable number.

149791749 is a deficient number, since it is larger than the sum of its proper divisors (50098011).

149791749 is a wasteful number, since it uses less digits than its factorization.

149791749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41859.

The product of its digits is 571536, while the sum is 51.

The square root of 149791749 is about 12238.9439495407. The cubic root of 149791749 is about 531.0832821448.

The spelling of 149791749 in words is "one hundred forty-nine million, seven hundred ninety-one thousand, seven hundred forty-nine".