37940491 has 8 divisors (see below), whose sum is σ = 39002480. Its totient is φ = 36886752.

The previous prime is 37940479. The next prime is 37940521. The reversal of 37940491 is 19404973.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 37940491 - 2¹¹ = 37938443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 37940491.

It is not an unprimeable number, because it can be changed into a prime (37940401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7921 + ... + 11773.

It is an arithmetic number, because the mean of its divisors is an integer number (4875310).

Almost surely, 2^37940491 is an apocalyptic number.

37940491 is a deficient number, since it is larger than the sum of its proper divisors (1061989).

37940491 is a wasteful number, since it uses less digits than its factorization.

37940491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4125.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 37940491 is about 6159.5852944821. The cubic root of 37940491 is about 336.0219509232.

The spelling of 37940491 in words is "thirty-seven million, nine hundred forty thousand, four hundred ninety-one".