249070989 has 8 divisors (see below), whose sum is σ = 332175712. Its totient is φ = 166006800.

The previous prime is 249070973. The next prime is 249070993. The reversal of 249070989 is 989070942.

It is a happy number.

249070989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 249070989 - 2⁴ = 249070973 is a prime.

It is a super-2 number, since 2×249070989² = 124072715122876242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (249070909) 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, 9822 + ... + 24384.

It is an arithmetic number, because the mean of its divisors is an integer number (41521964).

Almost surely, 2^249070989 is an apocalyptic number.

It is an amenable number.

249070989 is a deficient number, since it is larger than the sum of its proper divisors (83104723).

249070989 is a wasteful number, since it uses less digits than its factorization.

249070989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20267.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 249070989 is about 15781.9830503014. The cubic root of 249070989 is about 629.1792360358.

The spelling of 249070989 in words is "two hundred forty-nine million, seventy thousand, nine hundred eighty-nine".