40849998 has 64 divisors (see below), whose sum is σ = 97241088. Its totient is φ = 11197440.

The previous prime is 40849993. The next prime is 40850023. The reversal of 40849998 is 89994804.

It is a self number, because there is not a number n which added to its sum of digits gives 40849998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40849993) 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, 150603 + ... + 150873.

It is an arithmetic number, because the mean of its divisors is an integer number (1519392).

Almost surely, 2^40849998 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40849998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48620544).

40849998 is an abundant number, since it is smaller than the sum of its proper divisors (56391090).

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

40849998 is a wasteful number, since it uses less digits than its factorization.

40849998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417.

The product of its (nonzero) digits is 746496, while the sum is 51.

The square root of 40849998 is about 6391.4003160497. The cubic root of 40849998 is about 344.4006902529.

The spelling of 40849998 in words is "forty million, eight hundred forty-nine thousand, nine hundred ninety-eight".