13972477 has 12 divisors (see below), whose sum is σ = 14880124. Its totient is φ = 13115520.

The previous prime is 13972459. The next prime is 13972481. The reversal of 13972477 is 77427931.

It can be written as a sum of positive squares in 2 ways, for example, as 933156 + 13039321 = 966^2 + 3611^2 .

It is not a de Polignac number, because 13972477 - 2¹⁹ = 13448189 is a prime.

It is a super-2 number, since 2×13972477² = 390460227031058, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13972447) 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, 32053 + ... + 32485.

Almost surely, 2^13972477 is an apocalyptic number.

It is an amenable number.

13972477 is a deficient number, since it is larger than the sum of its proper divisors (907647).

13972477 is an equidigital number, since it uses as much as digits as its factorization.

13972477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 517 counting only the distinct ones).

The product of its digits is 74088, while the sum is 40.

The square root of 13972477 is about 3737.9776617845. The cubic root of 13972477 is about 240.8561838875.

The spelling of 13972477 in words is "thirteen million, nine hundred seventy-two thousand, four hundred seventy-seven".