69449990 has 8 divisors (see below), whose sum is σ = 125010000. Its totient is φ = 27779992.

The previous prime is 69449977. The next prime is 69450011. The reversal of 69449990 is 9994496.

It is a happy number.

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

It is a super-2 number, since 2×69449990² = 9646602222000200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 3472490 + ... + 3472509.

It is an arithmetic number, because the mean of its divisors is an integer number (15626250).

Almost surely, 2^69449990 is an apocalyptic number.

69449990 is a deficient number, since it is larger than the sum of its proper divisors (55560010).

69449990 is a wasteful number, since it uses less digits than its factorization.

69449990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6945006.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 69449990 is about 8333.6660600242. Note that the first 3 decimals coincide. The cubic root of 69449990 is about 411.0462866434.

The spelling of 69449990 in words is "sixty-nine million, four hundred forty-nine thousand, nine hundred ninety".