400498071 has 4 divisors (see below), whose sum is σ = 533997432. Its totient is φ = 266998712.

The previous prime is 400498037. The next prime is 400498151. The reversal of 400498071 is 170894004.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400498071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400498771) 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, 66749676 + ... + 66749681.

It is an arithmetic number, because the mean of its divisors is an integer number (133499358).

Almost surely, 2^400498071 is an apocalyptic number.

400498071 is a deficient number, since it is larger than the sum of its proper divisors (133499361).

400498071 is a wasteful number, since it uses less digits than its factorization.

400498071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133499360.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 400498071 is about 20012.4479012439. The cubic root of 400498071 is about 737.1119910919. Note that the first 3 decimals are identical.

The spelling of 400498071 in words is "four hundred million, four hundred ninety-eight thousand, seventy-one".