40400262890 has 48 divisors (see below), whose sum is σ = 78876384768. Its totient is φ = 14892067008.

The previous prime is 40400262829. The next prime is 40400262893. The reversal of 40400262890 is 9826200404.

It is a super-2 number, since 2×40400262890² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40400262890.

It is not an unprimeable number, because it can be changed into a prime (40400262893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1006139 + ... + 1045521.

It is an arithmetic number, because the mean of its divisors is an integer number (1643258016).

Almost surely, 2^40400262890 is an apocalyptic number.

40400262890 is a deficient number, since it is larger than the sum of its proper divisors (38476121878).

40400262890 is a wasteful number, since it uses less digits than its factorization.

40400262890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40023 (or 40010 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 40400262890 in words is "forty billion, four hundred million, two hundred sixty-two thousand, eight hundred ninety".