393080649 has 32 divisors (see below), whose sum is σ = 592677120. Its totient is φ = 231289344.

The previous prime is 393080641. The next prime is 393080669. The reversal of 393080649 is 946080393.

It is not a de Polignac number, because 393080649 - 2³ = 393080641 is a prime.

It is a super-2 number, since 2×393080649² = 309024793236522402, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 393080649.

It is not an unprimeable number, because it can be changed into a prime (393080641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 150297 + ... + 152889.

It is an arithmetic number, because the mean of its divisors is an integer number (18521160).

Almost surely, 2^393080649 is an apocalyptic number.

393080649 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

It is an amenable number.

393080649 is a deficient number, since it is larger than the sum of its proper divisors (199596471).

393080649 is a wasteful number, since it uses less digits than its factorization.

393080649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658 (or 2632 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 42.

The square root of 393080649 is about 19826.2615992022. The cubic root of 393080649 is about 732.5330462247.

The spelling of 393080649 in words is "three hundred ninety-three million, eighty thousand, six hundred forty-nine".