400426547 has 4 divisors (see below), whose sum is σ = 401731176. Its totient is φ = 399121920.

The previous prime is 400426531. The next prime is 400426567. The reversal of 400426547 is 745624004.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 400426547 - 2⁴ = 400426531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (400426567) 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, 651854 + ... + 652467.

It is an arithmetic number, because the mean of its divisors is an integer number (100432794).

Almost surely, 2^400426547 is an apocalyptic number.

400426547 is a deficient number, since it is larger than the sum of its proper divisors (1304629).

400426547 is a wasteful number, since it uses less digits than its factorization.

400426547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304628.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 400426547 is about 20010.6608336656. The cubic root of 400426547 is about 737.0681087858.

The spelling of 400426547 in words is "four hundred million, four hundred twenty-six thousand, five hundred forty-seven".