145945947 has 16 divisors (see below), whose sum is σ = 223891200. Its totient is φ = 82836192.

The previous prime is 145945939. The next prime is 145945981. The reversal of 145945947 is 749549541.

It is a happy number.

It is not a de Polignac number, because 145945947 - 2³ = 145945939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 145945896 and 145945905.

It is not an unprimeable number, because it can be changed into a prime (145945447) 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, 20193 + ... + 26450.

It is an arithmetic number, because the mean of its divisors is an integer number (13993200).

Almost surely, 2^145945947 is an apocalyptic number.

145945947 is a deficient number, since it is larger than the sum of its proper divisors (77945253).

145945947 is a wasteful number, since it uses less digits than its factorization.

145945947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46802.

The product of its digits is 907200, while the sum is 48.

The square root of 145945947 is about 12080.8090374776. The cubic root of 145945947 is about 526.4987522619.

The spelling of 145945947 in words is "one hundred forty-five million, nine hundred forty-five thousand, nine hundred forty-seven".