65147449 has 4 divisors (see below), whose sum is σ = 65377936. Its totient is φ = 64916964.

The previous prime is 65147437. The next prime is 65147471. The reversal of 65147449 is 94474156.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65147449 - 2²³ = 56758841 is a prime.

It is a super-2 number, since 2×65147449² = 8488380222415202, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65117449) 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, 114819 + ... + 115384.

It is an arithmetic number, because the mean of its divisors is an integer number (16344484).

Almost surely, 2^65147449 is an apocalyptic number.

It is an amenable number.

65147449 is a deficient number, since it is larger than the sum of its proper divisors (230487).

65147449 is a wasteful number, since it uses less digits than its factorization.

65147449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230486.

The product of its digits is 120960, while the sum is 40.

The square root of 65147449 is about 8071.3969670683. The cubic root of 65147449 is about 402.3763729216.

The spelling of 65147449 in words is "sixty-five million, one hundred forty-seven thousand, four hundred forty-nine".