39690049 has 12 divisors (see below), whose sum is σ = 46375428. Its totient is φ = 33868800.

The previous prime is 39690037. The next prime is 39690089. The reversal of 39690049 is 94009693.

It can be written as a sum of positive squares in 2 ways, for example, as 29811600 + 9878449 = 5460^2 + 3143^2 .

It is not a de Polignac number, because 39690049 - 2¹¹ = 39688001 is a prime.

It is a super-3 number, since 3×39690049³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 39689993 and 39690020.

It is not an unprimeable number, because it can be changed into a prime (39690089) 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, 10129 + ... + 13489.

It is an arithmetic number, because the mean of its divisors is an integer number (3864619).

Almost surely, 2^39690049 is an apocalyptic number.

It is an amenable number.

39690049 is a deficient number, since it is larger than the sum of its proper divisors (6685379).

39690049 is a wasteful number, since it uses less digits than its factorization.

39690049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3616 (or 3609 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 39690049 is about 6300.0038888877. The cubic root of 39690049 is about 341.1095499164.

It can be divided in two parts, 396900 and 49, that multiplied together give a square (19448100 = 4410²).

The spelling of 39690049 in words is "thirty-nine million, six hundred ninety thousand, forty-nine".