69840949 has 8 divisors (see below), whose sum is σ = 73054080. Its totient is φ = 66642576.

The previous prime is 69840899. The next prime is 69840997. The reversal of 69840949 is 94904896.

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 69840949 - 2⁷ = 69840821 is a prime.

It is a super-3 number, since 3×69840949³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69846949) 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 7 ways as a sum of consecutive naturals, for example, 6639 + ... + 13555.

It is an arithmetic number, because the mean of its divisors is an integer number (9131760).

Almost surely, 2^69840949 is an apocalyptic number.

It is an amenable number.

69840949 is a deficient number, since it is larger than the sum of its proper divisors (3213131).

69840949 is a wasteful number, since it uses less digits than its factorization.

69840949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7379.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 69840949 is about 8357.0897446420. The cubic root of 69840949 is about 411.8161530103.

The spelling of 69840949 in words is "sixty-nine million, eight hundred forty thousand, nine hundred forty-nine".