69449997 has 8 divisors (see below), whose sum is σ = 97473760. Its totient is φ = 43863120.

The previous prime is 69449977. The next prime is 69450011. The reversal of 69449997 is 79994496.

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

It is not a de Polignac number, because 69449997 - 2⁷ = 69449869 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 1218421 = 69449997 / (6 + 9 + 4 + 4 + 9 + 9 + 9 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69449917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 609154 + ... + 609267.

It is an arithmetic number, because the mean of its divisors is an integer number (12184220).

Almost surely, 2^69449997 is an apocalyptic number.

It is an amenable number.

69449997 is a deficient number, since it is larger than the sum of its proper divisors (28023763).

69449997 is a wasteful number, since it uses less digits than its factorization.

69449997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1218443.

The product of its digits is 4408992, while the sum is 57.

The square root of 69449997 is about 8333.6664800075. Note that the first 3 decimals coincide. The cubic root of 69449997 is about 411.0463004534.

The spelling of 69449997 in words is "sixty-nine million, four hundred forty-nine thousand, nine hundred ninety-seven".