37949669 has 4 divisors (see below), whose sum is σ = 39947040. Its totient is φ = 35952300.

The previous prime is 37949657. The next prime is 37949677. The reversal of 37949669 is 96694973.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96694973 = 79 ⋅1223987.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37949669 is a prime.

It is a super-2 number, since 2×37949669² = 2880354754419122, which contains 22 as substring.

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 37949669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37949699) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 998657 + ... + 998694.

It is an arithmetic number, because the mean of its divisors is an integer number (9986760).

Almost surely, 2^37949669 is an apocalyptic number.

It is an amenable number.

37949669 is a deficient number, since it is larger than the sum of its proper divisors (1997371).

37949669 is a wasteful number, since it uses less digits than its factorization.

37949669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1997370.

The product of its digits is 2204496, while the sum is 53.

The square root of 37949669 is about 6160.3302671204. The cubic root of 37949669 is about 336.0490438850.

The spelling of 37949669 in words is "thirty-seven million, nine hundred forty-nine thousand, six hundred sixty-nine".