400377734077 has 4 divisors (see below), whose sum is σ = 400578628060. Its totient is φ = 400176840096.

The previous prime is 400377734059. The next prime is 400377734083. The reversal of 400377734077 is 770437773004.

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

It can be written as a sum of positive squares in 2 ways, for example, as 292838993316 + 107538740761 = 541146^2 + 327931^2 .

It is a cyclic number.

It is not a de Polignac number, because 400377734077 - 2¹⁵ = 400377701309 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 400377734077.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400377734027) 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, 100444002 + ... + 100447987.

It is an arithmetic number, because the mean of its divisors is an integer number (100144657015).

Almost surely, 2^400377734077 is an apocalyptic number.

It is an amenable number.

400377734077 is a deficient number, since it is larger than the sum of its proper divisors (200893983).

400377734077 is a wasteful number, since it uses less digits than its factorization.

400377734077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200893982.

The product of its (nonzero) digits is 2420208, while the sum is 49.

The spelling of 400377734077 in words is "four hundred billion, three hundred seventy-seven million, seven hundred thirty-four thousand, seventy-seven".