69409961 has 4 divisors (see below), whose sum is σ = 71649024. Its totient is φ = 67170900.

The previous prime is 69409939. The next prime is 69409987. The reversal of 69409961 is 16990496.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 69409961 - 2²⁶ = 2301097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (69402961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1119485 + ... + 1119546.

It is an arithmetic number, because the mean of its divisors is an integer number (17912256).

Almost surely, 2^69409961 is an apocalyptic number.

It is an amenable number.

69409961 is a deficient number, since it is larger than the sum of its proper divisors (2239063).

69409961 is a wasteful number, since it uses less digits than its factorization.

69409961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2239062.

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 69409961 is about 8331.2640697556. The cubic root of 69409961 is about 410.9672996678.

The spelling of 69409961 in words is "sixty-nine million, four hundred nine thousand, nine hundred sixty-one".