39946740 has 96 divisors (see below), whose sum is σ = 119723520. Its totient is φ = 9922176.

The previous prime is 39946729. The next prime is 39946763. The reversal of 39946740 is 4764993.

It is a junction number, because it is equal to n+sod(n) for n = 39946692 and 39946701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76119 + ... + 76641.

It is an arithmetic number, because the mean of its divisors is an integer number (1247120).

Almost surely, 2^39946740 is an apocalyptic number.

39946740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 39946740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59861760).

39946740 is an abundant number, since it is smaller than the sum of its proper divisors (79776780).

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

39946740 is a wasteful number, since it uses less digits than its factorization.

39946740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 39946740 is about 6320.3433451040. The cubic root of 39946740 is about 341.8433330516.

The spelling of 39946740 in words is "thirty-nine million, nine hundred forty-six thousand, seven hundred forty".