149389749 has 12 divisors (see below), whose sum is σ = 215918976. Its totient is φ = 99531432.

The previous prime is 149389733. The next prime is 149389771. The reversal of 149389749 is 947983941.

149389749 is a `hidden beast` number, since 1 + 493 + 89 + 74 + 9 = 666.

149389749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 149389749 - 2⁴ = 149389733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 149389695 and 149389704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149389949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13884 + ... + 22170.

It is an arithmetic number, because the mean of its divisors is an integer number (17993248).

Almost surely, 2^149389749 is an apocalyptic number.

It is an amenable number.

149389749 is a deficient number, since it is larger than the sum of its proper divisors (66529227).

149389749 is a wasteful number, since it uses less digits than its factorization.

149389749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10296 (or 10293 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 54.

The square root of 149389749 is about 12222.5099304521. The cubic root of 149389749 is about 530.6077625120.

The spelling of 149389749 in words is "one hundred forty-nine million, three hundred eighty-nine thousand, seven hundred forty-nine".