39373989 has 16 divisors (see below), whose sum is σ = 55746432. Its totient is φ = 24634368.

The previous prime is 39373979. The next prime is 39373991. The reversal of 39373989 is 98937393.

It is a happy number.

It is not a de Polignac number, because 39373989 - 2¹³ = 39365797 is a prime.

It is a super-2 number, since 2×39373989² = 3100622019544242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39373969) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21192 + ... + 22974.

It is an arithmetic number, because the mean of its divisors is an integer number (3484152).

Almost surely, 2^39373989 is an apocalyptic number.

It is an amenable number.

39373989 is a deficient number, since it is larger than the sum of its proper divisors (16372443).

39373989 is a wasteful number, since it uses less digits than its factorization.

39373989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2236.

The product of its digits is 1102248, while the sum is 51.

The square root of 39373989 is about 6274.8696400802. The cubic root of 39373989 is about 340.2016940533.

It can be divided in two parts, 393739 and 89, that added together give a triangular number (393828 = T₈₈₇).

The spelling of 39373989 in words is "thirty-nine million, three hundred seventy-three thousand, nine hundred eighty-nine".