145977849 has 16 divisors (see below), whose sum is σ = 225667200. Its totient is φ = 93086928.

The previous prime is 145977841. The next prime is 145977857. The reversal of 145977849 is 948779541.

145977849 is a `hidden beast` number, since 1 + 4 + 597 + 7 + 8 + 49 = 666.

It is an interprime number because it is at equal distance from previous prime (145977841) and next prime (145977857).

It is not a de Polignac number, because 145977849 - 2³ = 145977841 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145977795 and 145977804.

It is not an unprimeable number, because it can be changed into a prime (145977841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116914 + ... + 118155.

It is an arithmetic number, because the mean of its divisors is an integer number (14104200).

Almost surely, 2^145977849 is an apocalyptic number.

It is an amenable number.

145977849 is a deficient number, since it is larger than the sum of its proper divisors (79689351).

145977849 is a wasteful number, since it uses less digits than its factorization.

145977849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235101 (or 235095 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 145977849 is about 12082.1293239230. The cubic root of 145977849 is about 526.5371115308.

The spelling of 145977849 in words is "one hundred forty-five million, nine hundred seventy-seven thousand, eight hundred forty-nine".