64029899 has 4 divisors (see below), whose sum is σ = 64054536. Its totient is φ = 64005264.

The previous prime is 64029887. The next prime is 64029913. The reversal of 64029899 is 99892046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 64029899 - 2¹⁶ = 63964363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64029799) 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, 7889 + ... + 13794.

It is an arithmetic number, because the mean of its divisors is an integer number (16013634).

Almost surely, 2^64029899 is an apocalyptic number.

64029899 is a deficient number, since it is larger than the sum of its proper divisors (24637).

64029899 is a wasteful number, since it uses less digits than its factorization.

64029899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24636.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 64029899 is about 8001.8684693014. The cubic root of 64029899 is about 400.0622798859.

The spelling of 64029899 in words is "sixty-four million, twenty-nine thousand, eight hundred ninety-nine".