247367993 has 8 divisors (see below), whose sum is σ = 253870656. Its totient is φ = 240944400.

The previous prime is 247367983. The next prime is 247368007. The reversal of 247367993 is 399763742.

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 247367993 - 2⁶ = 247367929 is a prime.

It is a super-2 number, since 2×247367993² = 122381847921696098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247367983) 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, 13403 + ... + 25968.

It is an arithmetic number, because the mean of its divisors is an integer number (31733832).

Almost surely, 2^247367993 is an apocalyptic number.

It is an amenable number.

247367993 is a deficient number, since it is larger than the sum of its proper divisors (6502663).

247367993 is a wasteful number, since it uses less digits than its factorization.

247367993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39535.

The product of its digits is 1714608, while the sum is 50.

The square root of 247367993 is about 15727.9367051117. The cubic root of 247367993 is about 627.7419736306.

The spelling of 247367993 in words is "two hundred forty-seven million, three hundred sixty-seven thousand, nine hundred ninety-three".