149986305 has 72 divisors (see below), whose sum is σ = 304746624. Its totient is φ = 68040000.

The previous prime is 149986303. The next prime is 149986307. The reversal of 149986305 is 503689941.

It is a happy number.

149986305 is a `hidden beast` number, since 1 + 4 + 9 + 9 + 8 + 630 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (149986303) and next prime (149986307).

It is not a de Polignac number, because 149986305 - 2¹ = 149986303 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (149986301) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 553320 + ... + 553590.

It is an arithmetic number, because the mean of its divisors is an integer number (4232592).

Almost surely, 2^149986305 is an apocalyptic number.

149986305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

149986305 is an abundant number, since it is smaller than the sum of its proper divisors (154760319).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

149986305 is a wasteful number, since it uses less digits than its factorization.

149986305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 149986305 is about 12246.8896051202. The cubic root of 149986305 is about 531.3131139779.

The spelling of 149986305 in words is "one hundred forty-nine million, nine hundred eighty-six thousand, three hundred five".