400047395049 has 45 divisors (see below), whose sum is σ = 617773498221. Its totient is φ = 257981244840.

The previous prime is 400047395029. The next prime is 400047395071. The reversal of 400047395049 is 940593740004.

It is a happy number.

The square root of 400047395049 is 632493.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 400047395049 - 2¹³ = 400047386857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400047394995 and 400047395013.

It is not an unprimeable number, because it can be changed into a prime (400047395029) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 176464414 + ... + 176466680.

Almost surely, 2^400047395049 is an apocalyptic number.

400047395049 is the 632493-rd square number.

400047395049 is the 316247-th centered octagonal number.

It is an amenable number.

400047395049 is a deficient number, since it is larger than the sum of its proper divisors (217726103172).

400047395049 is an frugal number, since it uses more digits than its factorization.

400047395049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4608 (or 2301 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 400047395049 in words is "four hundred billion, forty-seven million, three hundred ninety-five thousand, forty-nine".