40237809390 has 24 divisors (see below), whose sum is σ = 104618304648. Its totient is φ = 10730082480.

The previous prime is 40237809389. The next prime is 40237809419. The reversal of 40237809390 is 9390873204.

It is a happy number.

40237809390 is a `hidden beast` number, since 402 + 3 + 78 + 0 + 93 + 90 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223543296 + ... + 223543475.

It is an arithmetic number, because the mean of its divisors is an integer number (4359096027).

Almost surely, 2^40237809390 is an apocalyptic number.

40237809390 is an abundant number, since it is smaller than the sum of its proper divisors (64380495258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40237809390 is a wasteful number, since it uses less digits than its factorization.

40237809390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447086784 (or 447086781 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 45.

The spelling of 40237809390 in words is "forty billion, two hundred thirty-seven million, eight hundred nine thousand, three hundred ninety".