145747949 has 8 divisors (see below), whose sum is σ = 147540960. Its totient is φ = 143962000.

The previous prime is 145747891. The next prime is 145747951. The reversal of 145747949 is 949747541.

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

It is a cyclic number.

It is not a de Polignac number, because 145747949 - 2¹⁶ = 145682413 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145747897 and 145747906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145747249) 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, 48122 + ... + 51060.

It is an arithmetic number, because the mean of its divisors is an integer number (18442620).

Almost surely, 2^145747949 is an apocalyptic number.

It is an amenable number.

145747949 is a deficient number, since it is larger than the sum of its proper divisors (1793011).

145747949 is a wasteful number, since it uses less digits than its factorization.

145747949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3531.

The product of its digits is 1270080, while the sum is 50.

The square root of 145747949 is about 12072.6115236100. The cubic root of 145747949 is about 526.2605524822.

The spelling of 145747949 in words is "one hundred forty-five million, seven hundred forty-seven thousand, nine hundred forty-nine".