400069777047 has 16 divisors (see below), whose sum is σ = 542920688640. Its totient is φ = 262000301472.

The previous prime is 400069777021. The next prime is 400069777069. The reversal of 400069777047 is 740777960004.

It is not a de Polignac number, because 400069777047 - 2¹⁰ = 400069776023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400069777097) 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, 4237723 + ... + 4331100.

It is an arithmetic number, because the mean of its divisors is an integer number (33932543040).

Almost surely, 2^400069777047 is an apocalyptic number.

400069777047 is a deficient number, since it is larger than the sum of its proper divisors (142850911593).

400069777047 is a wasteful number, since it uses less digits than its factorization.

400069777047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8569102.

The product of its (nonzero) digits is 2074464, while the sum is 51.

The spelling of 400069777047 in words is "four hundred billion, sixty-nine million, seven hundred seventy-seven thousand, forty-seven".