401248947 has 24 divisors (see below), whose sum is σ = 593509840. Its totient is φ = 240926400.

The previous prime is 401248907. The next prime is 401248949. The reversal of 401248947 is 749842104.

It is not a de Polignac number, because 401248947 - 2¹¹ = 401246899 is a prime.

It is a super-2 number, since 2×401248947² = 322001434937217618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (401248949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34497 + ... + 44637.

Almost surely, 2^401248947 is an apocalyptic number.

401248947 is a deficient number, since it is larger than the sum of its proper divisors (192260893).

401248947 is a wasteful number, since it uses less digits than its factorization.

401248947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10275 (or 10264 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 401248947 is about 20031.1993400295. The cubic root of 401248947 is about 737.5723629848.

The spelling of 401248947 in words is "four hundred one million, two hundred forty-eight thousand, nine hundred forty-seven".