64499349 has 4 divisors (see below), whose sum is σ = 85999136. Its totient is φ = 42999564.

The previous prime is 64499339. The next prime is 64499353. The reversal of 64499349 is 94399446.

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 not a de Polignac number, because 64499349 - 2⁵ = 64499317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 64499298 and 64499307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64499339) 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, 10749889 + ... + 10749894.

It is an arithmetic number, because the mean of its divisors is an integer number (21499784).

Almost surely, 2^64499349 is an apocalyptic number.

It is an amenable number.

64499349 is a deficient number, since it is larger than the sum of its proper divisors (21499787).

64499349 is a wasteful number, since it uses less digits than its factorization.

64499349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21499786.

The product of its digits is 839808, while the sum is 48.

The square root of 64499349 is about 8031.1486725125. The cubic root of 64499349 is about 401.0376164694.

The spelling of 64499349 in words is "sixty-four million, four hundred ninety-nine thousand, three hundred forty-nine".