149892547 has 4 divisors (see below), whose sum is σ = 171305776. Its totient is φ = 128479320.

The previous prime is 149892521. The next prime is 149892551. The reversal of 149892547 is 745298941.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 149892547 - 2²³ = 141503939 is a prime.

It is a super-2 number, since 2×149892547² = 44935551292294418, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149892547.

It is not an unprimeable number, because it can be changed into a prime (149892047) 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, 10706604 + ... + 10706617.

It is an arithmetic number, because the mean of its divisors is an integer number (42826444).

Almost surely, 2^149892547 is an apocalyptic number.

149892547 is a deficient number, since it is larger than the sum of its proper divisors (21413229).

149892547 is an equidigital number, since it uses as much as digits as its factorization.

149892547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21413228.

The product of its digits is 725760, while the sum is 49.

The square root of 149892547 is about 12243.0611776630. The cubic root of 149892547 is about 531.2023811159.

The spelling of 149892547 in words is "one hundred forty-nine million, eight hundred ninety-two thousand, five hundred forty-seven".