247877401 has 16 divisors (see below), whose sum is σ = 265852800. Its totient is φ = 231068880.

The previous prime is 247877387. The next prime is 247877411. The reversal of 247877401 is 104778742.

It is not a de Polignac number, because 247877401 - 2¹⁵ = 247844633 is a prime.

It is a super-2 number, since 2×247877401² = 122886411853029602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (247877411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 486735 + ... + 487243.

It is an arithmetic number, because the mean of its divisors is an integer number (16615800).

Almost surely, 2^247877401 is an apocalyptic number.

It is an amenable number.

247877401 is a deficient number, since it is larger than the sum of its proper divisors (17975399).

247877401 is an frugal number, since it uses more digits than its factorization.

247877401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 599 counting only the distinct ones).

The product of its (nonzero) digits is 87808, while the sum is 40.

The square root of 247877401 is about 15744.1227446943. The cubic root of 247877401 is about 628.1725838097.

The spelling of 247877401 in words is "two hundred forty-seven million, eight hundred seventy-seven thousand, four hundred one".