40749894 has 24 divisors (see below), whose sum is σ = 89205480. Its totient is φ = 13442688.

The previous prime is 40749871. The next prime is 40749899. The reversal of 40749894 is 49894704.

It is a super-2 number, since 2×40749894² = 3321107722022472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40749899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9924 + ... + 13415.

It is an arithmetic number, because the mean of its divisors is an integer number (3716895).

Almost surely, 2^40749894 is an apocalyptic number.

40749894 is an abundant number, since it is smaller than the sum of its proper divisors (48455586).

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

40749894 is a wasteful number, since it uses less digits than its factorization.

40749894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23444 (or 23441 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 40749894 is about 6383.5643648357. The cubic root of 40749894 is about 344.1191391460.

The spelling of 40749894 in words is "forty million, seven hundred forty-nine thousand, eight hundred ninety-four".