400040400039 has 32 divisors (see below), whose sum is σ = 611914352640. Its totient is φ = 227722255200.

The previous prime is 400040399981. The next prime is 400040400047. The reversal of 400040400039 is 930004040004.

It is not a de Polignac number, because 400040400039 - 2¹² = 400040395943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400040399991 and 400040400018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400040400049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8951452 + ... + 8996030.

It is an arithmetic number, because the mean of its divisors is an integer number (19122323520).

Almost surely, 2^400040400039 is an apocalyptic number.

400040400039 is a deficient number, since it is larger than the sum of its proper divisors (211873952601).

400040400039 is a wasteful number, since it uses less digits than its factorization.

400040400039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46211.

The product of its (nonzero) digits is 1728, while the sum is 24.

The spelling of 400040400039 in words is "four hundred billion, forty million, four hundred thousand, thirty-nine".