76409669 has 12 divisors (see below), whose sum is σ = 90014400. Its totient is φ = 64661688.

The previous prime is 76409647. The next prime is 76409687. The reversal of 76409669 is 96690467.

It is not a de Polignac number, because 76409669 - 2¹² = 76405573 is a prime.

It is a super-2 number, since 2×76409669² = 11676875033379122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (76409629) 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, 5999 + ... + 13740.

It is an arithmetic number, because the mean of its divisors is an integer number (7501200).

Almost surely, 2^76409669 is an apocalyptic number.

76409669 is a gapful number since it is divisible by the number (79) formed by its first and last digit.

It is an amenable number.

76409669 is a deficient number, since it is larger than the sum of its proper divisors (13604731).

76409669 is a wasteful number, since it uses less digits than its factorization.

76409669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19832 (or 19825 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 47.

The square root of 76409669 is about 8741.2624374286. The cubic root of 76409669 is about 424.3420851646.

The spelling of 76409669 in words is "seventy-six million, four hundred nine thousand, six hundred sixty-nine".