407486981 has 16 divisors (see below), whose sum is σ = 455889600. Its totient is φ = 364093840.

The previous prime is 407486969. The next prime is 407487001. The reversal of 407486981 is 189684704.

It is a de Polignac number, because none of the positive numbers 2^k-407486981 is a prime.

It is a super-2 number, since 2×407486981² = 332091279368988722, 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 (407486081) 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, 75935 + ... + 81123.

It is an arithmetic number, because the mean of its divisors is an integer number (28493100).

Almost surely, 2^407486981 is an apocalyptic number.

It is an amenable number.

407486981 is a deficient number, since it is larger than the sum of its proper divisors (48402619).

407486981 is an equidigital number, since it uses as much as digits as its factorization.

407486981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5281 (or 5259 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 47.

The square root of 407486981 is about 20186.3067696892. The cubic root of 407486981 is about 741.3749582833.

The spelling of 407486981 in words is "four hundred seven million, four hundred eighty-six thousand, nine hundred eighty-one".