249391006830 has 48 divisors (see below), whose sum is σ = 741047565024. Its totient is φ = 57003658560.

The previous prime is 249391006829. The next prime is 249391006841. The reversal of 249391006830 is 38600193942.

It is a happy number.

It is a super-3 number, since 3×249391006830³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197928741 + ... + 197930000.

It is an arithmetic number, because the mean of its divisors is an integer number (15438490938).

Almost surely, 2^249391006830 is an apocalyptic number.

249391006830 is an abundant number, since it is smaller than the sum of its proper divisors (491656558194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

249391006830 is a wasteful number, since it uses less digits than its factorization.

249391006830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395858761 (or 395858758 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The spelling of 249391006830 in words is "two hundred forty-nine billion, three hundred ninety-one million, six thousand, eight hundred thirty".