69422991 has 16 divisors (see below), whose sum is σ = 101927808. Its totient is φ = 41679200.

The previous prime is 69422987. The next prime is 69423001. The reversal of 69422991 is 19922496.

It is a cyclic number.

It is not a de Polignac number, because 69422991 - 2² = 69422987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69422191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6300 + ... + 13361.

It is an arithmetic number, because the mean of its divisors is an integer number (6370488).

Almost surely, 2^69422991 is an apocalyptic number.

69422991 is a deficient number, since it is larger than the sum of its proper divisors (32504817).

69422991 is a wasteful number, since it uses less digits than its factorization.

69422991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19782.

The product of its digits is 69984, while the sum is 42.

The square root of 69422991 is about 8332.0460272372. The cubic root of 69422991 is about 410.9930143673.

The spelling of 69422991 in words is "sixty-nine million, four hundred twenty-two thousand, nine hundred ninety-one".