641393049 has 24 divisors (see below), whose sum is σ = 942469920. Its totient is φ = 387703360.

The previous prime is 641393033. The next prime is 641393057. The reversal of 641393049 is 940393146.

641393049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 641393049 - 2⁴ = 641393033 is a prime.

It is a super-2 number, since 2×641393049² = 822770086611032802, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 641392998 and 641393016.

It is not an unprimeable number, because it can be changed into a prime (641393009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 149989 + ... + 154205.

It is an arithmetic number, because the mean of its divisors is an integer number (39269580).

Almost surely, 2^641393049 is an apocalyptic number.

It is an amenable number.

641393049 is a deficient number, since it is larger than the sum of its proper divisors (301076871).

641393049 is a wasteful number, since it uses less digits than its factorization.

641393049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4661 (or 4650 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 641393049 is about 25325.7388638515. The cubic root of 641393049 is about 862.3986798015.

The spelling of 641393049 in words is "six hundred forty-one million, three hundred ninety-three thousand, forty-nine".