64001949 has 16 divisors (see below), whose sum is σ = 96098304. Its totient is φ = 37537200.

The previous prime is 64001941. The next prime is 64002061. The reversal of 64001949 is 94910046.

It is not a de Polignac number, because 64001949 - 2³ = 64001941 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64001941) 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, 30259 + ... + 32304.

It is an arithmetic number, because the mean of its divisors is an integer number (6006144).

Almost surely, 2^64001949 is an apocalyptic number.

It is an amenable number.

64001949 is a deficient number, since it is larger than the sum of its proper divisors (32096355).

64001949 is a wasteful number, since it uses less digits than its factorization.

64001949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62608.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 64001949 is about 8000.1218115726. The cubic root of 64001949 is about 400.0040603754.

The spelling of 64001949 in words is "sixty-four million, one thousand, nine hundred forty-nine".