40739949 has 24 divisors (see below), whose sum is σ = 61393920. Its totient is φ = 26698896.

The previous prime is 40739911. The next prime is 40739957. The reversal of 40739949 is 94993704.

It is not a de Polignac number, because 40739949 - 2¹¹ = 40737901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40739989) 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, 320724 + ... + 320850.

It is an arithmetic number, because the mean of its divisors is an integer number (2558080).

Almost surely, 2^40739949 is an apocalyptic number.

It is an amenable number.

40739949 is a deficient number, since it is larger than the sum of its proper divisors (20653971).

40739949 is a wasteful number, since it uses less digits than its factorization.

40739949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 40739949 is about 6382.7853637734. The cubic root of 40739949 is about 344.0911428092.

The spelling of 40739949 in words is "forty million, seven hundred thirty-nine thousand, nine hundred forty-nine".