784066949 has 8 divisors (see below), whose sum is σ = 797941080. Its totient is φ = 770305536.

The previous prime is 784066931. The next prime is 784066951. The reversal of 784066949 is 949660487.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 55606849 + 728460100 = 7457^2 + 26990^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 784066949 - 2⁸ = 784066693 is a prime.

It is a super-2 number, since 2×784066949² = 1229521961028337202, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 784066949.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (784066249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14084 + ... + 42029.

It is an arithmetic number, because the mean of its divisors is an integer number (99742635).

Almost surely, 2^784066949 is an apocalyptic number.

It is an amenable number.

784066949 is a deficient number, since it is larger than the sum of its proper divisors (13874131).

784066949 is a wasteful number, since it uses less digits than its factorization.

784066949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56359.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The square root of 784066949 is about 28001.1954923357. The cubic root of 784066949 is about 922.1135046118.

The spelling of 784066949 in words is "seven hundred eighty-four million, sixty-six thousand, nine hundred forty-nine".