249128085394 has 8 divisors (see below), whose sum is σ = 373731830640. Its totient is φ = 124550808516.

The previous prime is 249128085391. The next prime is 249128085397. The reversal of 249128085394 is 493580821942.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (249128085391) and next prime (249128085397).

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

It is a super-2 number, since 2×249128085394² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (249128085391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6593544 + ... + 6631219.

It is an arithmetic number, because the mean of its divisors is an integer number (46716478830).

Almost surely, 2^249128085394 is an apocalyptic number.

249128085394 is a deficient number, since it is larger than the sum of its proper divisors (124603745246).

249128085394 is a wasteful number, since it uses less digits than its factorization.

249128085394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13234184.

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 249128085394 in words is "two hundred forty-nine billion, one hundred twenty-eight million, eighty-five thousand, three hundred ninety-four".