649424946 has 8 divisors (see below), whose sum is σ = 1298849904. Its totient is φ = 216474980.

The previous prime is 649424891. The next prime is 649424947.

It is a happy number.

649424946 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

649424946 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 649424895 and 649424904.

It is not an unprimeable number, because it can be changed into a prime (649424947) 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, 54118740 + ... + 54118751.

It is an arithmetic number, because the mean of its divisors is an integer number (162356238).

Almost surely, 2^649424946 is an apocalyptic number.

649424946 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

649424946 is a wasteful number, since it uses less digits than its factorization.

649424946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108237496.

The product of its digits is 1492992, while the sum is 48.

The square root of 649424946 is about 25483.8173357133. The cubic root of 649424946 is about 865.9835765028.

It can be divided in two parts, 649424 and 946, that added together give a triangular number (650370 = T₁₁₄₀).

The spelling of 649424946 in words is "six hundred forty-nine million, four hundred twenty-four thousand, nine hundred forty-six".