69101989 has 8 divisors (see below), whose sum is σ = 77137632. Its totient is φ = 61358640.

The previous prime is 69101987. The next prime is 69102013. The reversal of 69101989 is 98910196.

69101989 = 121² + 122² + ... + 593².

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 69101989 - 2¹ = 69101987 is a prime.

It is a super-2 number, since 2×69101989² = 9550169767512242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69101987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72574 + ... + 73519.

It is an arithmetic number, because the mean of its divisors is an integer number (9642204).

Almost surely, 2^69101989 is an apocalyptic number.

It is an amenable number.

69101989 is a deficient number, since it is larger than the sum of its proper divisors (8035643).

69101989 is a wasteful number, since it uses less digits than its factorization.

69101989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146147.

The product of its (nonzero) digits is 34992, while the sum is 43.

The square root of 69101989 is about 8312.7606124560. The cubic root of 69101989 is about 410.3585778364.

The spelling of 69101989 in words is "sixty-nine million, one hundred one thousand, nine hundred eighty-nine".