763491969 has 12 divisors (see below), whose sum is σ = 1150770816. Its totient is φ = 486864312.

The previous prime is 763491941. The next prime is 763491979. The reversal of 763491969 is 969194367.

763491969 is a `hidden beast` number, since 7 + 63 + 491 + 96 + 9 = 666.

It is not a de Polignac number, because 763491969 - 2⁸ = 763491713 is a prime.

It is a super-2 number, since 2×763491969² = 1165839973454993922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (763491979) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1843977 + ... + 1844390.

It is an arithmetic number, because the mean of its divisors is an integer number (95897568).

Almost surely, 2^763491969 is an apocalyptic number.

It is an amenable number.

763491969 is a deficient number, since it is larger than the sum of its proper divisors (387278847).

763491969 is a wasteful number, since it uses less digits than its factorization.

763491969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3688396 (or 3688393 counting only the distinct ones).

The product of its digits is 2204496, while the sum is 54.

The square root of 763491969 is about 27631.3584356615. The cubic root of 763491969 is about 913.9760686068.

The spelling of 763491969 in words is "seven hundred sixty-three million, four hundred ninety-one thousand, nine hundred sixty-nine".